62%
16%
9%
3%
10%
WiFi
Breakfast
Gym
Laundry
Complimentary coffee, tea,
San Francisco Downtown Hotel near Union Square and Moscone Center
The Mosser has anchored SoMa since 1913, when it opened as the Keystone Hotel. A 2003 renovation blended Victorian bones with custom furniture, wooden Venetian blinds, and granite-and-steel bathrooms. The Keystone serves globally-inspired cuisine and elevated cocktails, steps from Yerba Buena Gardens, SFMOMA, and Union Square.
What You Get
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A stay at The Mosser in San Francisco's SoMa, a 3-star historic hotel open since 1913 steps from Yerba Buena Gardens
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Free breakfast served daily in the Keystone Corner Room, the hotel's on-site restaurant
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Complimentary coffee, tea, and muffins served each morning from 6.30 a.m. to 9.30 a.m.
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Complimentary WiFi throughout the property; access to an offsite fitness center may be available for an additional fee
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Walk to Union Square, SFMOMA, and Moscone Center from this perfectly placed SoMa address
Plan Your Stay
Amenities
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Amenities
- WiFi: Complimentary throughout the property
- Breakfast: Free daily in the Keystone Corner Room
- Gym: Access to an offsite fitness center (additional fee)
- Spa: Access to an offsite fitness center (additional fee)
- On-site dining: The Keystone, globally-inspired menu and elevated cocktails
- Laundry: Coin-operated machines on-site
- Accessibility features: Facilities for disabled guests
- Concierge: 24-hour front desk and concierge services
- Complimentary coffee, tea, and muffins served from 6:30 a.m. to 9:30 a.m.: Each morning in the lobby area
Room Details
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Room Details
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Deluxe Full Room
- Occupancy: 1x Full Bed
- Sleeps 2 guests
- Room amenities: Free WiFi, Flatscreen TV
- Occupancy: 1x Full Bed
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Deluxe Queen Room
- Occupancy: 1x Queen Bed
- Sleeps 2 guests
- Room amenities: Free WiFi, Flatscreen TV
- Occupancy: 1x Queen Bed
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Deluxe Double-Twin Room
- Occupancy: 2x Twin Bed
- Sleeps 2 guests
- Room amenities: Free WiFi, Flatscreen TV
- Occupancy: 2x Twin Bed
Getting There
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Getting There
- Nearest Airport: Oakland International (OAK) — 11 miles away
- Distance from San Francisco: 1 mile
Location Highlights
Attractions Nearby
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Attractions Nearby
Yerba Buena Gardens (0.1 mi from hotel) — A two-block public park with the MLK Jr. Memorial waterfall, public art, a year-round ice-skating rink, and a historic carousel.
San Francisco Museum of Modern Art (SFMOMA) (0.2 mi from hotel) — One of the largest modern art museums in the US, expanded in 2016 with a striking Snohetta-designed addition.
Union Square (0.2 mi from hotel) — San Francisco's central shopping and civic plaza, anchored by the Dewey Monument and ringed by flagship department stores.
Hidden Gems
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Hidden Gems
Old San Francisco Mint / Mint Plaza (0.2 mi from hotel) — An 1874 Greek Revival former US Mint that survived the 1906 earthquake, with a pedestrian plaza hosting pop-up dining and street fairs.
111 Minna Gallery — A SoMa loft converted into an art gallery by day and bar and event space by night, hosting rotating shows and DJ nights nearby.
Local Edition (0.2 mi from hotel) — A subterranean speakeasy inside the historic Hearst Building, styled after a 1920s newspaper pressroom with nightly live jazz and no cover.
Trip Ideas
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Trip Ideas
Downtown SF Culture Walk — A flat, walkable half-day loop from the hotel through Yerba Buena Gardens, SFMOMA, and Union Square, all within easy walking distance.
Local's Night Out — An evening walk to modern Mexican dinner at Tropisueno near Yerba Buena, then live jazz at the Local Edition speakeasy on Market Street.
How It Works
1.
Select Your Stay — Choose your room type directly from the options listed.
2.
Pick Your Dates — Use the calendar to find available days for your selection.
3.
Instant Confirmation — Your booking is instantly confirmed with the hotel, guaranteeing they have your details and are expecting your arrival.
Fine Print
Cancellation & Changes
- A 72-hour cancellation notice is required prior to check-in; reservations cancelled within the cancellation window are non-refundable.
- Room upgrades not available.
- For all hotel/lodgings in California booked more than 72 hours in advance, purchasers will have 24 hours after the reservation is confirmed to request a refund.
- No-shows will be charged total Groupon rate.
- No refunds will be processed by Groupon after check-in.
Check-in & Check-out
- Check-in after 3 PM.
- Check-out before 12 PM.
Eligibility & ID
- Traveler name must match ID at time of check-in.
- Guests must be 18+ to check in.
Fees & Charges
- Parking: valet available for an additional $57 per day ($67 per day for oversized vehicles).
- $75 credit card security deposit paid at check-in.
- The price shown is the full price of your reservation, and only applicable taxes are added at checkout.
Other
- Pets are not allowed inside the property.
- No smoking inside the property.
- Rates may vary by date and are subject to availability.
- Merchant is solely responsible to purchasers for the care and quality of the advertised goods and services.
- Learn about Strike-Through Pricing and Savings
About The Mosser
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