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The Mosser - San Francisco, CA

Downtown San Francisco Hotel

This merchant is open for business and taking steps to help protect your health by following all applicable laws and regulations concerning COVID-19 safety.

What You Get

View local health guidelines for travel here

  • Stay for two in a deluxe full room, deluxe double-twin room, or deluxe queen room

Policies and Fees

  • Reservations: Dates cannot be changed once booked; valid only for night(s) purchased.
  • Cancellation policy: 72-hour cancellation notice required prior to check-in or reservation is non-refundable; reservations made within cancellation window are non-refundable. Same day cancellations are allowed through 12/31/20.
  • Additional fees: $75 credit card security deposit paid at check-in.
  • Rates may vary by date and are subject to availability.

No-shows will be charged total rate; no refunds, rescheduling, or rebooking allowed.

Hotel at a Glance: The Mosser

The Mosser has been a staple near San Francisco’s Union Square since it first opened in 1913 as the Keystone Hotel. The modern hotel sits across from the Moscone Center, a massive convention center and exhibition complex, and around the corner from the upscale Westfield San Francisco Centre mall in Union Square.

  • Kick back in elegance: [Guest rooms[( feature wooden Venetian blinds, and guest bathrooms have been renovated with granite and steel fixtures.
  • Stay on top of email thanks to the hotel’s free WiFi.
  • Charge up for the day with complimentary coffee, tea, and muffins served from 6:30 a.m. to 9:30 a.m.
  • Dig into fresh cuisine at the onsite restaurant, The Keystone.
  • Take a stroll southeast on 4th Street and you’ll quickly encounter Yerba Buena Gardens, a two-block park lined with memorials, museums, and a year-round ice-skating rink.

San Francisco’s South of Market Neighborhood: Museums, Gardens, and Tech Headquarters

Just north of the popular Mission District, South of Market (or SoMa, as it’s sometimes called) is a vast neighborhood that contains many of the city’s best museums, including the Asian Art Museum and the Museum of Modern Art. Yerba Buena Gardens displays a number of outdoor art pieces and a Martin Luther King Jr. memorial, which sits behind a 50-foot-high waterfall. The public gardens, a butterfly garden among them, cover two city blocks.

Quite a few Silicon Valley companies have had headquarters in South of Market, including Twitter, Yelp, and Wired. The Yerba Buena Center for the Arts is one of Apple Inc.’s favorite venues for unveiling new products—Steve Jobs introduced the iPod and the iPad to the world from its stage.

Other Details

Room Details

Deluxe Full Room

  • One full bed
  • Standard occupancy: 2
  • Maximum occupancy: 2

Deluxe Double-Twin Room

  • Two twin beds
  • Standard occupancy: 2
  • Maximum occupancy: 2

Deluxe Queen Room

  • One queen bed
  • Standard occupancy: 2
  • Maximum occupancy: 2

Hotel Policies

  • Check in: 3 p.m.
  • Check out: 12 p.m.
  • Parking: valet available for an additional $57 per day ($67 per day for oversized vehicles).
  • Smoking policy: no smoking inside the property.
  • Pet policy: pets are not allowed inside the property.
  • Accessibility: please contact property for handicap-accessibility requests or options.
  • Room upgrades: not available.

  • Safety Protocols:
    • Hand sanitizer stations have been placed throughout all public spaces and lobby.
    • Our housekeeping department now clean with EPA-rated hospital-grade disinfectants and clean more frequently.
    • Rooms are put out-of-order for at least 48 hours before renting it out again.
    • Personal Protection Equipment (PPE) Required. All hotel associated are required to wear face masks. Guests are encouraged to do so as well.
    • For associates who have direct contact with guests (e.g. front desk agents) are provided with masks, disinfecting products and hand sanitizer bottles and/or dispensers. Associates are aware of and implement the necessity of safe hand washing and hygiene practices.
  • Suspended service until further notice:
    • We are suspending valet parking and our complimentary breakfast service until further notice.
    • Paid self parking available at the 5th & Mission garage one block from the hotel.
    • Guests are welcome to pull over in front the hotels 15 minutes loading/unloading zone and proceed with check in at the Front Desk.
    • Maids service on multiple night’s stay are suspended. Front Desk is staffed 24/7. Guest can call in for fresh linen and toiletries.
  • Guest rooms cleaning protocols:
    • EPA-rated hospital-grade disinfectants will be used to clean each guest room, with special attention to all high-touch surfaces (e.g. door handles, light switches, etc.)
    • No hotel personnel will enter your room during your stay without your permission.
    • Replenished towels and linens will be provided upon request.
    • All RFID guest keys will be disinfected upon check-out.
    • For the laundry and cleaning of bed linens and towels, laundry bags will be utilized to and from the cleaning facility.


  • Restaurant
  • Complimentary coffee, tea, and muffins served from 6:30 a.m. to 9:30 a.m.
  • Free WiFi
  • Access to offsite fitness center (additional fee)

The Fine Print

  • Dates cannot be changed once booked; valid only for night(s) purchased
  • 72-hour cancellation notice required prior to check-in or reservation is non-refundable; reservations made within cancellation window are non-refundable
  • Same day cancellations are allowed through 12/31/20
  • No-shows will be charged total LivingSocial rate
  • Traveler name must match ID at time of check-in
  • No refunds will be processed by LivingSocial after check-in
  • Must be 18 or older to check in
  • Credit card required at check-in
  • $75 credit card security deposit paid at check-in.

About The Mosser

Getting There

  • Nearest airport: San Francisco International Airport (SFO; 14 mi)
  • Nearest transit stop: BART Powell St. stop
  • Cab fare: about $70 from SFO, including a 20% tip

Customer Reviews

100% Verified Reviews
All reviews are from people who have redeemed deals with this merchant.
customer service
air conditioner
parking spaces
66 ratings56 reviews4 photos
January 4, 2021
Awesome Location! Good Customer Service! Quaint Hotel & Room! Will definitely return!
3 ratings1 reviews
January 25, 2021
The location of the property is really good! Easy to get off at public transit. The staff were very kind and attentive - probably my favorite thing. However .. I not only found a cockroach next to my bed, but my shower was not working and they offer community showers (which I was jot aware of) and also found two cockroaches in that shower. For 100$ a night, I kinda expect a little better.
2 ratings2 reviews
December 25, 2020
The parking was awful ! And paying $35.00 a night for parking is worse !
1 ratings1 reviews
October 7, 2020
Very nice, very clean, staff very nice. We would love to stay again. Thank you 😊
2 ratings1 reviews
September 16, 2020
As expected!
2 ratings2 reviews
September 3, 2020
It was nothing out of the ordinary. It was small, had a bed and it was clean. Fulfilled the purpose of sleeping there! The water was wonderfully warm, perfect for the cold San Francisco weather!!
66 ratings56 reviews4 photos
January 12, 2021
Small but quaint room. Unique design of room and lovely older architecture of hotel. No A/C :( and ceiling fan didn't work, but evening staff was great and no matter what...YOU CAN'T BEAT THE LOCATION! Surrounded by everything in walking distance...Trader's Joe, Ross, Target, Mel's Diner, Denny's...etc.
27 ratings8 reviews
August 19, 2020
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