Business Details
50+ Years
experience
The Mosser Hotel | Boutique Hotel in San Francisco
We are proud to operate The Mosser Hotel, an award-winning distinctively artful hotel located in the heart of downtown San Francisco. Nestled between Union Squares world-class shopping district and the Moscone Convention Center, our hotel offers convenient access to the citys premier attractions. Guests can walk to Union Square, the Westfield San Francisco Centre, Moscone Center, the Sony Metreon, Yerba Buena Gardens, SFMOMA, and many other destinations within blocks. Our adjoining restaurant, The Keystone, serves elevated cocktails and a globally inspired menu that delights food enthusiasts. All of our nonsmoking guest rooms feature customdesigned furnishings that maximize space efficiency while providing a unique flair. The stylish ambiance throughout the hotel delivers warmth, charm, and comfort to every visitor.The Mosser Hotel family proudly supports rainforest reforestation, literacy initiatives, and various educational projects. Originally opened in 1913 as the Keystone Hotel, the property was acquired by Charles W. Mosser in 1981 and underwent a multimillion dollar renovation in 2003 before being renamed The Mosser Hotel. For over a century we have welcomed Bay Area visitors, offering comfortable accommodations and attentive service. We also offer curated packages such as the 3+ Night Package, the 2 Night Escape, and the Mosser Romance Escape, each providing added value and special amenities. Our meeting and event spaces, including a 300squarefoot conference room and a 200squarefoot boardroom, cater to both business and social gatherings.
Services
Hotel accommodations
Restaurant dining (The Keystone)
Cocktail and dining experience (The Harlequin)
Meeting and event spaces
Special stay packages
Nonsmoking guest rooms
Customdesigned furnishings
No amenity fees
Price guarantee
Reservation assistance
Details
- Year established: 1913
Highlights and features
- We have over 100 years of hospitality experience.
- Our hotel steps from Union Square and Moscone Center.
- Our nonsmoking rooms feature customdesigned furnishings for space efficiency.
- The Keystone restaurant serves elevated cocktails and globally inspired dishes.
- We provide a 300sqft conference room and a 200sqft boardroom.
People
Charles W. Mosser
Owner
Charles W. Mosser acquired the historic Keystone Hotel in 1981, overseeing a multimillion dollar renovation in 2003 that restored the property and renamed it The Mosser Hotel, blending Victorian architecture with modern design.
Questions
What type of accommodation does The Mosser offer?
The Mosser provides non‑smoking guest rooms with custom‑designed furnishings, blending historic Victorian architecture with modern comfort.
Where is The Mosser located in San Francisco?
The Mosser sits at 54 Fourth Street, steps from Union Square and the Moscone Convention Center in downtown San Francisco.
What dining options are available at The Mosser?
Guests can enjoy the on‑site Keystone restaurant, offering elevated cocktails and a globally inspired menu, plus the Harlequin lounge for cocktails and small plates.
What meeting and event spaces does The Mosser provide?
The hotel features a 300‑square‑foot conference room for 16 guests and a 200‑square‑foot boardroom for 8 guests, both equipped with modern amenities.
Are there any special stay packages offered by The Mosser?
Yes, the Mosser offers packages such as the 3+ Night Escape (20% off), 2 Night Escape (15% off), and the Romance Escape (10% off with wine and late checkout).
