◈ Homepage — http://www.themosser.com/Rooms Deals Meetings & Events About Restaurant Contact Book Stay in the Heart of San Francisco BOOK NOW   LEARN MORE The Mosser is an Award-Winning Distinctively Artful Hotel in the Heart of Downtown San Francisco LEARN MORE Fusing historic Victorian architecture with sleek modern design, it exists as a charming retreat amidst the hustle and bustle of our city by the bay. Conveniently located between the city’s renowned Union Square (shopping district) and the Moscone Convention Center, both business and leisure travelers will find excellent shopping, touring and nightlife within blocks from their hotel room. Foodies will rejoice at the convenience and quality of our adjoining restaurant, The Keystone, where elevated cocktails and globally-inspired menu options are sure to satisfy every palate. The Mosser’s non-smoking guest rooms incorporate custom-designed furnishings for ingenious space-efficiency and a unique flair. The stylish ambience provides warmth, charm and comfort. Get the full San Francisco experience with a night An indulgent spa day, a laughter-filled brunch, bo Follow on Instagram No Amenity Fees & Price Guarantee If you find a lower publicly published price for the same date and terms on any other qualified online source that we can verify, we will honor the lower price. Our reservation specialists are available to help with any questions. Introducing The Harlequin A Decadent Era of Cocktails and Dining in Downtown San Francisco. Enjoy New American cuisine and expertly crafted cocktails and classics. Our spaces are great for group celebrations, date nights, private dining, and corporate events. Located steps from Moscone Center in the Yerba Buena neighborhood. VISIT & MAKE RESERVATIONS Deals & Packages 3+ Night Package Extend your stay and enjoy 20% off our best available rate when you book 3 or more nights. Package Includes: 20% off our best rate Perfectly downtown Boutique comfort, timeless style BOOK NOW 2 Night Escape Perfect for a city escape - enjoy 15% off our best available rate when you stay 2 nights. Package Includes: 15% off our best rate Relax & unwind Steps from Union Square & Moscone Center BOOK NOW The Mosser Romance Escape Rediscover romance in the heart of the city. Package Includes: 10% off an overnight stay for two in one of our charming guest rooms 1:00 PM late check-out (based on availability) Complimentary bottle of California wine Perfect For: Anniversaries, weekend getaways, or spontaneous “just because” escapes. Book Direct & Save: Make your next stay a celebration — book the Mosser Romance Escape now and let the city set the mood. BOOK NOW Rooms Deals Meetings & Events About Restaurant Contact Book 54 Fourth Street San Francisco, CA 94103 415.986.4400 Reservations:  [email protected]  800.227.3804       Newsletter Signup Email Subscribe Affiliates ©2026 Mosser. All Rights Reserved.    |    Privacy Policy We use cookies on our website to give you the most relevant experience by remembering your preferences and repeat visits. By clicking “Accept”, you consent to the use of ALL the cookies. Do not sell my personal information. Cookie Settings Accept REWARDS ◈ Interior Pages — 7 pages crawledAbout - The Mosser Hotel and tags on every page of your site. --> Rooms Deals Meetings & Events About Restaurant Contact Book       Rooms Deals Meetings & Events About Restaurant Contact Book About The Mosser Book Now Nestled between Union Square’s world class shopping district and the Moscone Convention Center, The Mosser is ideally situated at Fourth and Market streets in the heart of downtown San Francisco, within walking distance to some of the city’s most famed attractions. History Opened in 1913 as the Keystone Hotel, this historic property has offered a delightful experience to Bay Area visitors for over 100 years! In 1981, Charles W. Mosser purchased the hotel and, after a multi-million dollar renovation in 2003, he renamed it The Mosser. Like San Francisco, The Mosser offers a unique, free-spirited culture mixed with the splendor of yester-year. This is apparent in the fusion of Victorian architecture and modern interior design. The Mosser family is a strong supporter of the reforestation of the rain forests, literacy, and various educational projects. Genre Hotels Our Mission To simply associate the identity and style of a hotel or travel service with the identity and style of the traveler. We use the strength and ideas of our membership to spread the word, thus reaching a more global community of traveler – a new kind of viral marketing tailored to the hospitality industry. Our Goal Because the way we do business has changed, you can’t stand alone on your own mountain top hoping to be successful. Through the power of our hotel and travel service members located across the U.S. and abroad, genre hotels has and will be uniting its membership to become a force in the travel industry. Visit Genre Hotels The Mosser Hotel is conveniently located in the heart of Downtown San Francisco. It is walking distance from Union Square, San Francisco West Field Mall, Moscone Center, The Sony Metreon, Yerba Buena Gardens, the SF MOMA & many more. Book Now   Contact Us Rooms Deals Meetings & Events About Restaurant Contact Book 54 Fourth Street San Francisco, CA 94103 415.986.4400 Reservations:   [email protected]   800.227.3804       Newsletter Signup Affiliates ©2026 Mosser. All Rights Reserved.    |    Privacy Policy We use cookies on our website to give you the most relevant experience by remembering your preferences and repeat visits. By clicking “Accept”, you consent to the use of ALL the cookies. Do not sell my personal information . 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SAVE & ACCEPT About - The Mosser Hotel and tags on every page of your site. --> Rooms Deals Meetings & Events About Restaurant Contact Book       Rooms Deals Meetings & Events About Restaurant Contact Book About The Mosser Book Now Nestled between Union Square’s world class shopping district and the Moscone Convention Center, The Mosser is ideally situated at Fourth and Market streets in the heart of downtown San Francisco, within walking distance to some of the city’s most famed attractions. History Opened in 1913 as the Keystone Hotel, this historic property has offered a delightful experience to Bay Area visitors for over 100 years! In 1981, Charles W. Mosser purchased the hotel and, after a multi-million dollar renovation in 2003, he renamed it The Mosser. Like San Francisco, The Mosser offers a unique, free-spirited culture mixed with the splendor of yester-year. This is apparent in the fusion of Victorian architecture and modern interior design. The Mosser family is a strong supporter of the reforestation of the rain forests, literacy, and various educational projects. Genre Hotels Our Mission To simply associate the identity and style of a hotel or travel service with the identity and style of the traveler. We use the strength and ideas of our membership to spread the word, thus reaching a more global community of traveler – a new kind of viral marketing tailored to the hospitality industry. Our Goal Because the way we do business has changed, you can’t stand alone on your own mountain top hoping to be successful. Through the power of our hotel and travel service members located across the U.S. and abroad, genre hotels has and will be uniting its membership to become a force in the travel industry. Visit Genre Hotels The Mosser Hotel is conveniently located in the heart of Downtown San Francisco. It is walking distance from Union Square, San Francisco West Field Mall, Moscone Center, The Sony Metreon, Yerba Buena Gardens, the SF MOMA & many more. Book Now   Contact Us Rooms Deals Meetings & Events About Restaurant Contact Book 54 Fourth Street San Francisco, CA 94103 415.986.4400 Reservations:   [email protected]   800.227.3804       Newsletter Signup Affiliates ©2026 Mosser. All Rights Reserved.    |    Privacy Policy We use cookies on our website to give you the most relevant experience by remembering your preferences and repeat visits. By clicking “Accept”, you consent to the use of ALL the cookies. Do not sell my personal information . Cookie Settings Accept Manage consent Close Privacy Overview This website uses cookies to improve your experience while you navigate through the website. Out of these, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. 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SAVE & ACCEPT Meetings & Events - The Mosser Hotel and tags on every page of your site. --> Rooms Deals Meetings & Events About Restaurant Contact Book       Rooms Deals Meetings & Events About Restaurant Contact Book Meetings & Events Your Perfect San Francisco Venue for Meetings and Events Conference Room 16 Guests, 300 Sq Ft Enter our conference room, where functionality meets comfort. This space fosters creativity and productivity. Equipped with modern amenities and ergonomic furnishings, our meeting room is tailored to accommodate your needs, whether it’s a brainstorming session or a formal presentation. Contact to Book Room Conference Room 16 Guests, 300 Sq Ft Enter our conference room, where functionality meets comfort. This space fosters creativity and productivity. Equipped with modern amenities and ergonomic furnishings, our meeting room is tailored to accommodate your needs, whether it’s a brainstorming session or a formal presentation. Contact to Book Room Boardroom 8 Guests, 200 Sq Ft Welcome to our cozy boardroom, designed for focused discussions and efficient decision-making. With its natural lighting and comfortable seating, this space offers a relaxed yet professional atmosphere. Contact to Book Room Boardroom 8 Guests, 200 Sq Ft Welcome to our cozy boardroom, designed for focused discussions and efficient decision-making. With its natural lighting and comfortable seating, this space offers a relaxed yet professional atmosphere. Contact to Book Room Reserve Your Space Contact us below to reserve your room. We will follow up promptly to get you started! Notice: JavaScript is required for this content. Rooms Deals Meetings & Events About Restaurant Contact Book 54 Fourth Street San Francisco, CA 94103 415.986.4400 Reservations:   [email protected]   800.227.3804       Newsletter Signup Affiliates ©2026 Mosser. All Rights Reserved.    |    Privacy Policy We use cookies on our website to give you the most relevant experience by remembering your preferences and repeat visits. By clicking “Accept”, you consent to the use of ALL the cookies. Do not sell my personal information . Cookie Settings Accept Manage consent Close Privacy Overview This website uses cookies to improve your experience while you navigate through the website. Out of these, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. We also use third-party cookies that help us analyze and understand how you use this website. These cookies will be stored in your browser only with your consent. You also have the option to opt-out of these cookies. But opting out of some of these cookies may affect your browsing experience. Necessary Necessary Always Enabled Necessary cookies are absolutely essential for the website to function properly. 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These cookies help provide information on metrics the number of visitors, bounce rate, traffic source, etc. Advertisement Advertisement Advertisement cookies are used to provide visitors with relevant ads and marketing campaigns. These cookies track visitors across websites and collect information to provide customized ads. Others Others Other uncategorized cookies are those that are being analyzed and have not been classified into a category as yet. SAVE & ACCEPT Privacy Policy - The Mosser Hotel and tags on every page of your site. --> Rooms Deals Meetings & Events About Restaurant Contact Book       Rooms Deals Meetings & Events About Restaurant Contact Book Privacy Policy This privacy policy discloses the privacy practices for this website operated by Mosser Companies (“Mosser”) on behalf of its apartment communities. Mosser wants you to understand the terms and conditions surrounding Mosser’s collection and use of your personally identifiable information through this website. Information Collection and Use Mosser collects personally identifiable information when you visit the site’s pages or when you voluntarily provide information to Mosser through the site. The site automatically logs information about you from your browser when you visit the site, such as your IP address, the pages you visit and similar information. You may also choose to voluntarily provide us with information about you at various places on the site. Personal information which we may ask you to provide includes your name, location, e-mail address, company affiliation, telephone number, and other similar information. This site may place and access cookies when you visit the site. A cookie is a small data file that websites commonly write to your hard drive when you visit them. A cookie file contains information that can identify you each time you visit the site. This site uses cookies as a way to measure activity and traffic patterns on the site. You may choose to set your computer to reject cookies if you desire. From time-to-time Mosser’s website may request additional information from users via surveys or contests. Participation in these surveys or contests is completely voluntary and you therefore have a choice whether or not to disclose additional information that may be requested. Information requested via surveys and contests may include additional demographic information. Mosser may use the information collected through this site to send you information and promotional material, to process your requests for information or services, or to customize the site for your future visits. Sharing and Disclosure Mosser is not in the business of selling or renting your personally identifiable information. Mosser may share information about you with others under the following circumstances: When necessary to third parties who work for Mosser In order to process your requests or provide you information when you consent to disclosure By operation of law, when such information is transferred as a part of a sale of assets including the assets represented by this site To comply with law, court orders, subpoena or legal process; or to enforce or apply Mosser’s agreements or protect Mosser’s rights or the rights or property of third parties In the event that Mosser or substantially all of its assets are acquired outside of the ordinary course of business, your information may be one of the transferred assets To protect the security and integrity of the site To correct technical problems and malfunctions in how the site operates or processes visitors’ information Linked Sites It is important to note that Mosser’s website contains links to other websites and that those other websites may not follow the same privacy policies as Mosser. For instance, if you click an ad on our website, this may take you away from our site to an entirely different website. This includes links from advertisers, content providers and trade partners who may use our logo and/or style as part of a co-branding agreement. These other websites may collect data from you that Mosser would not and may use that data in ways that Mosser would not. Security This site takes precautions to protect your personally identifiable information. In certain areas of the site, your information may be protected using industry-standard Secure Socket Layer (SSL) encryption technology. While we use SSL encryption to protect sensitive information online, we also take steps to protect user information offline. All of our users’ information is restricted in our offices. Correcting and Deleting Information If the information you have given Mosser changes and you would like to modify it or if you would like to view the information Mosser has about you, send your request to the following location. In addition, if you wish to remove information about yourself from Mosser’s files, use the Contact Mosser form or send an email to the address listed on the site. With any request, provide Mosser with a means to identify you and contact you if necessary. Mosser will respond to appropriate requests within a reasonable time. Mosser, Attn: Website Privacy 308 Jessie Street, San Francisco, CA 94103, 415.673.1608. Children Mosser does not knowingly collect any personally identifiable information from children under 13 years old through the site. However, if the parent or guardian of a child under 13 believes that the child has provided Mosser with personally identifiable information, the parent or guardian of that child should contact us through the contact information provided on this page if they want this information deleted from Mosser’s files. If Mosser obtains knowledge that it has personally identifiable information about a child under 13 in retrievable form in our files, Mosser will delete that information from existing files. In addition, anyone under 18 years old should seek their parent’s or guardian’s permission prior to using or disclosing any personal information on the site. European Union The European Union’s Directive on Data Protection sets forth certain adequacy standards for data protection involving the personal information that is transferred from the European Union to the United States. The U.S. and E.U. have entered into a “Safe Harbor” that allows U.S. entities receiving personal information from the E.U. to comply with the European Union’s Directive. Mosser has satisfied the requirements of the Safe Harbor Principles and has certified that compliance with the U. S. Department of Commerce. Changes to Privacy Policy The site is created and controlled by Mosser in the State of California, USA. By using the site, you signify your assent to this Privacy Policy. If you do not agree to this Privacy Policy, please do not use the site. Mosser reserves the right to make changes or modifications to this Privacy Policy at any time without notice. Please check this page periodically for changes. Your continued use of the site following the posting of changes to This Policy constitutes acceptance of those changes. Rooms Deals Meetings & Events About Restaurant Contact Book 54 Fourth Street San Francisco, CA 94103 415.986.4400 Reservations:   [email protected]   800.227.3804       Newsletter Signup Affiliates ©2026 Mosser. All Rights Reserved.    |    Privacy Policy We use cookies on our website to give you the most relevant experience by remembering your preferences and repeat visits. By clicking “Accept”, you consent to the use of ALL the cookies. Do not sell my personal information . Cookie Settings Accept Manage consent Close Privacy Overview This website uses cookies to improve your experience while you navigate through the website. Out of these, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. We also use third-party cookies that help us analyze and understand how you use this website. These cookies will be stored in your browser only with your consent. You also have the option to opt-out of these cookies. But opting out of some of these cookies may affect your browsing experience. Necessary Necessary Always Enabled Necessary cookies are absolutely essential for the website to function properly. These cookies ensure basic functionalities and security features of the website, anonymously. Contact & Location - The Mosser Hotel and tags on every page of your site. --> Rooms Deals Meetings & Events About Restaurant Contact Book       Rooms Deals Meetings & Events About Restaurant Contact Book The Mosser Hotel is conveniently located in the heart of Downtown San Francisco. 54 Fourth Street San Francisco, CA 94103 Open Google Maps General Inquiry 415.986.4400 Fax 415.495.4337 Reservations 800.227.3804 Email [email protected] You can also reach us by submitting the form below: Notice: JavaScript is required for this content. Rooms Deals Meetings & Events About Restaurant Contact Book 54 Fourth Street San Francisco, CA 94103 415.986.4400 Reservations:   [email protected]   800.227.3804       Newsletter Signup Affiliates ©2026 Mosser. All Rights Reserved.    |    Privacy Policy We use cookies on our website to give you the most relevant experience by remembering your preferences and repeat visits. By clicking “Accept”, you consent to the use of ALL the cookies. Do not sell my personal information . Cookie Settings Accept Manage consent Close Privacy Overview This website uses cookies to improve your experience while you navigate through the website. Out of these, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. We also use third-party cookies that help us analyze and understand how you use this website. These cookies will be stored in your browser only with your consent. 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These cookies help provide information on metrics the number of visitors, bounce rate, traffic source, etc. Advertisement Advertisement Advertisement cookies are used to provide visitors with relevant ads and marketing campaigns. These cookies track visitors across websites and collect information to provide customized ads. Others Others Other uncategorized cookies are those that are being analyzed and have not been classified into a category as yet. SAVE & ACCEPT Deals & Packages - The Mosser Hotel and tags on every page of your site. --> Rooms Deals Meetings & Events About Restaurant Contact Book       Rooms Deals Meetings & Events About Restaurant Contact Book Deals & Packages 3+ Night Package Extend your stay and enjoy 20% off our best available rate when you book 3 or more nights. Package Includes: 20% off our best rate Perfectly downtown Boutique comfort, timeless style Book Now 2 Night Escape Perfect for a city escape - enjoy 15% off our best available rate when you stay 2 nights. Package Includes: 15% off our best rate Relax & unwind Steps from Union Square & Moscone Center Book Now The Mosser Romance Escape Rediscover romance in the heart of the city. Package Includes: 10% off an overnight stay for two in one of our charming guest rooms 1:00 PM late check-out (based on availability) Complimentary bottle of California wine Perfect For: Anniversaries, weekend getaways, or spontaneous “just because” escapes. Book Direct & Save: Make your next stay a celebration — book the Mosser Romance Escape now and let the city set the mood. Book Now Rooms Deals Meetings & Events About Restaurant Contact Book 54 Fourth Street San Francisco, CA 94103 415.986.4400 Reservations:   [email protected]   800.227.3804       Newsletter Signup Affiliates ©2026 Mosser. All Rights Reserved.    |    Privacy Policy We use cookies on our website to give you the most relevant experience by remembering your preferences and repeat visits. By clicking “Accept”, you consent to the use of ALL the cookies. Do not sell my personal information . Cookie Settings Accept Manage consent Close Privacy Overview This website uses cookies to improve your experience while you navigate through the website. Out of these, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. We also use third-party cookies that help us analyze and understand how you use this website. These cookies will be stored in your browser only with your consent. You also have the option to opt-out of these cookies. But opting out of some of these cookies may affect your browsing experience. Necessary Necessary Always Enabled Necessary cookies are absolutely essential for the website to function properly. 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