- Check-in
- 14 Nov 2026
- Check-out
- 15 Nov 2026
1 night · 1 room · 2 adults
Last priced: Queen Room
Non-refundable rate.
room only
$164 USD total · 1 night
Recorded price · confirmed again before you book.
FOUND Hotel, San Francisco
140 Mason St., CA 94102 San Francisco
1 night, 30 days ahead, refundable, 2 adults Price history ↓
- Now
- $172
- Median
- $138
- All-time floor
- $119
- Nights measured
- 32
Choose your stay
Explore the hotel’s room types
Room descriptions from the hotel. Available rooms and prices for your dates appear above.
Doubles4 types
- King Roomsleeps 2, up to 1 of them a child · 17 m² · 1 extra-large double bed (super-king size), 181–210 cm wide
Room details
The double room features air conditioning, a wardrobe, as well as a private bathroom boasting a bath or a shower and a hairdryer. The unit has 1 bed.
- Queen Roomsleeps 2, up to 1 of them a child · 10 m² · 1 queen bed, 151–180 cm wide
Room details
The double room provides air conditioning, a wardrobe, as well as a private bathroom featuring a bath or a shower and a hairdryer. Rooms on the upper floors are reachable by elevator. The unit offers 1 bed.
- Queen Roomsleeps 2, up to 1 of them a child · 10 m² · 1 queen bed, 151–180 cm wide
Room details
The double room features air conditioning, a wardrobe, as well as a private bathroom boasting a bath or a shower and a hairdryer. Rooms on the upper floors are reachable by elevator. The unit has 1 bed.
- Standard Double Roomsleeps 2, up to 1 of them a child · 10 m² · 2 twin beds, 90–130 cm wide
Room details
The double room offers air conditioning, a wardrobe, as well as a private bathroom boasting a bath or a shower and a hairdryer. Rooms on the upper floors are reachable by elevator. The unit has 2 beds.
Twins2 types
- Superior Twin Roomsleeps 2, up to 1 of them a child · 10 m² · 2 twin beds, 90–130 cm wide
Room details
The twin room offers air conditioning, a wardrobe, as well as a private bathroom boasting a bath or a shower and a hairdryer. The unit has 2 beds.
- Twin Roomsleeps 2, up to 1 of them a child · 10 m² · 2 twin beds, 90–130 cm wide
Room details
The twin room provides air conditioning, a wardrobe, as well as a private bathroom featuring a bath or a shower and a hairdryer. Rooms on the upper floors are reachable by elevator. The unit offers 2 beds.
Triples & larger2 types
- Superior Quadruple Roomsleeps 4, up to 3 of them children · 10 m² · 4 twin beds, 90–130 cm wide
Room details
The quadruple room provides air conditioning, a wardrobe, as well as a private bathroom featuring a bath or a shower and a hairdryer. Rooms on the upper floors are reachable by elevator. The unit offers 4 beds.
- Quadruple Roomsleeps 4, up to 3 of them children · 11 m² · 4 twin beds, 90–130 cm wide
Room details
The quadruple room offers air conditioning, a wardrobe, as well as a private bathroom boasting a bath or a shower and a hairdryer. The unit has 4 beds.
November 2026 · 4 recorded stays
- Check-in
- 14 Nov 2026
- Check-out
- 15 Nov 2026
1 night · 1 room · 2 adults
Last priced: Queen Room
Refundable · deadline confirmed before payment.
room only
$172 USD total · 1 night
Recorded price · confirmed again before you book.
- Check-in
- 14 Nov 2026
- Check-out
- 21 Nov 2026
7 nights · 1 room · 2 adults
Last priced: Superior Quadruple Room, Multiple Beds , 4 Twin Beds
Refundable · deadline confirmed before payment.
room only
$2,285 USD total · 7 nights
Recorded price · confirmed again before you book.
- Check-in
- 14 Nov 2026
- Check-out
- 21 Nov 2026
7 nights · 1 room · 2 adults
Last priced: Superior Quadruple Room
Non-refundable rate.
room only
$2,353 USD total · 7 nights
Recorded price · confirmed again before you book.
December 2026 · 4 recorded stays
- Check-in
- 14 Dec 2026
- Check-out
- 15 Dec 2026
1 night · 1 room · 2 adults
Last priced: Superior Double Room, 2 Twin Beds
Refundable · deadline confirmed before payment.
room only
$102 USD total · 1 night
Recorded price · confirmed again before you book.
- Check-in
- 14 Dec 2026
- Check-out
- 15 Dec 2026
1 night · 1 room · 2 adults
Last priced: Superior Twin Room
Non-refundable rate.
room only
$109 USD total · 1 night
Recorded price · confirmed again before you book.
- Check-in
- 14 Dec 2026
- Check-out
- 21 Dec 2026
7 nights · 1 room · 2 adults
Last priced: Superior Double room (bunk bed)
Non-refundable rate.
room only
$730 USD total · 7 nights
Recorded price · confirmed again before you book.
- Check-in
- 14 Dec 2026
- Check-out
- 21 Dec 2026
7 nights · 1 room · 2 adults
Last priced: Superior Double room (bunk bed)
Refundable · deadline confirmed before payment.
room only
$769 USD total · 7 nights
Recorded price · confirmed again before you book.
January 2027 · 4 recorded stays
- Check-in
- 9 Jan 2027
- Check-out
- 10 Jan 2027
1 night · 1 room · 2 adults
Last priced: Superior Quadruple room
Non-refundable rate.
room only
$152 USD total · 1 night
Recorded price · confirmed again before you book.
- Check-in
- 9 Jan 2027
- Check-out
- 10 Jan 2027
1 night · 1 room · 2 adults
Last priced: Superior Double Room, 2 Twin Beds
Refundable · deadline confirmed before payment.
room only
$156 USD total · 1 night
Recorded price · confirmed again before you book.
- Check-in
- 13 Jan 2027
- Check-out
- 20 Jan 2027
7 nights · 1 room · 2 adults
Last priced: Superior Twin Room
Non-refundable rate.
room only
$2,111 USD total · 7 nights
Recorded price · confirmed again before you book.
- Check-in
- 13 Jan 2027
- Check-out
- 20 Jan 2027
7 nights · 1 room · 2 adults
Last priced: Superior Twin Room
Refundable · deadline confirmed before payment.
room only
$2,223 USD total · 7 nights
Recorded price · confirmed again before you book.
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About this hotel
Central Location in San Francisco
Sonder at FOUND Union Square is conveniently situated in the heart of San Francisco, just steps away from Union Square and the Moscone Center. With easy access to transportation at the Powell Street BART and Muni station, exploring the city is a breeze.
Modern Amenities
Enjoy the convenience of free WiFi throughout the property at Sonder at FOUND Union Square. The 24-hour front desk and inviting common spaces ensure a comfortable stay. Additionally, take advantage of the on-site laundry facilities for added convenience during your visit.
More about this hotel
Near Major Attractions
Explore iconic San Francisco landmarks such as City Hall and Coit Tower, located just a short distance from the hotel. With the San Francisco International Airport also within reach, Sonder at FOUND Union Square is the perfect choice for your stay in the city.
At a glance
- Address
- 140 Mason St., CA 94102 San Francisco
- Hours
- Check-in from 15:00 · check-out by 11:00
Hotel details
Loading hotel location…
Amenities
In the room
- Air conditioning
Food and drink
- Restaurant
- Bar
- Mobile app for room service
Internet and work
- Free WiFi
Services
- Laundry
Families and pets
- Family rooms
Accessibility and safety
- Lift / Elevator
and 22 more
In the room
- Staff adhere to local safety protocols
- Screens / Barriers between staff and guests for safety
Food and drink
- Physical distancing in dining areas
Internet and work
- Business center
Services
- Daily housekeeping
- Laundry washed per local authority guidelines
- Contactless check-in/check-out
Accessibility and safety
- Non-smoking throughout
- First aid kit available
Other
- Cashless payment available
- Food delivered to guest room
- Guest rooms disinfected between stays
- Cleaning standards that are effective against Coronavirus
- Physical distancing rules followed
- Hand sanitizer in guest room and key areas
- Sanitized tableware & silverware
- Invoice provided
- Guests can opt-out any cleaning services during stay
- Shared stationery like menus, pens are removed
- Guest room sealed after cleaning
- Property cleaned by professional cleaning companies
- Face masks for guests available
Hotel policies
Good to know before you book
- Pets are not allowed.
- Children are welcome.
- After confirmation, Sonder will reach out to guests through a secure link to gather some information regarding the guests stay. Sonder may require the guest to provide a photo of their government issued photo ID. Guests will receive check in details from property management three days prior to arrival. Please note, the layout, furniture, and decor of your space may vary from these photos. This is a central location and prone to city noise. License number is 1206719-12-181.This property does not accommodate bachelor(ette) or similar parties.
- Guests are required to show a photo ID and credit card upon check-in. Please note that all Special Requests are subject to availability and additional charges may apply.
- Guests under the age of 18 can only check in with a parent or official guardian.
- A deposit may be required at the property.
Price history
1 night, 30 days ahead, refundable, 2 adults
14 Oct 202614 Nov
median now $138
Show the 32 readings
| Date | Nightly rate |
|---|---|
| 14 Oct 2026 | $278 |
| 15 Oct 2026 | $243 |
| 16 Oct 2026 | $150 |
| 17 Oct 2026 | $138 |
| 18 Oct 2026 | $121 |
| 19 Oct 2026 | $126 |
| 20 Oct 2026 | $125 |
| 21 Oct 2026 | $149 |
| 22 Oct 2026 | $139 |
| 23 Oct 2026 | $161 |
| 24 Oct 2026 | $126 |
| 25 Oct 2026 | $126 |
| 26 Oct 2026 | $120 |
| 27 Oct 2026 | $125 |
| 28 Oct 2026 | $126 |
| 29 Oct 2026 | $138 |
| 30 Oct 2026 | $149 |
| 31 Oct 2026 | $210 |
| 1 Nov 2026 | $126 |
| 2 Nov 2026 | $145 |
| 3 Nov 2026 | $124 |
| 4 Nov 2026 | $138 |
| 5 Nov 2026 | $126 |
| 6 Nov 2026 | $138 |
| 7 Nov 2026 | $138 |
| 8 Nov 2026 | $126 |
| 9 Nov 2026 | $134 |
| 10 Nov 2026 | $129 |
| 11 Nov 2026 | $138 |
| 12 Nov 2026 | $138 |
| 13 Nov 2026 | $138 |
| 14 Nov 2026 | $172 |
- Now
- $172
- Median
- $138
- All-time floor
- $119
- Nights measured
- 32
- Among comparable hotels, last sweep
- 28th of 44
- Cheaper than
- 9% of readings
- Swings
- ±23%
- Refundable vs not
- 5% more
Other measured stays
| Stay | Now | Median | Low | High | Nights |
|---|---|---|---|---|---|
| 1 night, 30 days ahead, non-refundable | Now$164 | Median$131 | Low$112 | High$264 | Nights32 |
| 1 night, 30 days ahead, refundable | Now$172 | Median$138 | Low$119 | High$278 | Nights32 |
| 1 night, 60 days ahead, non-refundable | Now$109 | Median$132 | Low$109 | High$422 | Nights32 |
| 1 night, 60 days ahead, refundable | Now$102 | Median$138 | Low$102 | High$444 | Nights32 |
| 1 night, 90 days ahead, non-refundable | Now$152 | Median$109 | Low$109 | High$153 | Nights28 |
| 1 night, 90 days ahead, refundable | Now$156 | Median$115 | Low$114 | High$161 | Nights28 |
| 7 nights, 30 days ahead, non-refundable | Now$2,353 | Median$948 | Low$847 | High$2,353 | Nights32 |
| 7 nights, 30 days ahead, refundable | Now$2,285 | Median$998 | Low$891 | High$2,396 | Nights32 |
| 7 nights, 60 days ahead, non-refundable | Now$730 | Median$1,068 | Low$730 | High$2,092 | Nights32 |
| 7 nights, 60 days ahead, refundable | Now$769 | Median$1,125 | Low$769 | High$2,203 | Nights32 |
| 7 nights, 90 days ahead, non-refundable | Now$2,111 | Median$850 | Low$771 | High$5,545 | Nights32 |
| 7 nights, 90 days ahead, refundable | Now$2,223 | Median$894 | Low$812 | High$5,837 | Nights32 |
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