About The Mosser

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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.


  • 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.

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