Places to staySan Francisco, CA
Inn at Union Square
Hotel, 3-star440 Post Street, San Francisco, CA, United StatesShow on map
Top rated
Guests rate it highest for location, service and cleanliness.
9.4510Reviews- Check-in from 4:00 PMCheck-out by 11:00 AM. The front desk is staffed around the clock, so a late arrival is fine.
- Exceptional locationGuests rate the location 9.8 out of 10, at 440 Post Street.
Sophisticated Boutique Hotel Retreat Experience the charm of The Inn at Union Square San Francisco, a unique and sophisticated hotel nestled in the vibrant heart of Union Square.
Prime Location Located in the center of it all, our boutique hotel offers easy access to a wide array of San Francisco's top sights and attractions.
Proximity to Iconic Landmarks Enjoy being just minutes away from famous landmarks such as the iconic cable cars, Golden Gate Bridge, and Fisherman's Wharf.
Book your stay now at The Inn at Union Square San Francisco for an unforgettable experience in the heart of the city.
What this place offers
- WiFi available
- Free WiFi
- Non-smoking rooms
- 24-hour front desk
- Heating
- Lift / Elevator
- Safety deposit box
- Facilities for disabled guests
- Meeting/banquet facilities
- Non-smoking throughout
Rooms
9.4
Top rated
Rated 9.4 out of 10 by 510 guests who stayed here.
- Cleanliness9.3
- Service9.8
- Location9.8
- Rooms9.3
- Amenities9.3
- Value8.7
- Food & drink9.3
Guests mention
Ideal locationFriendly and helpful staffClean and comfortable roomsGood breakfast options
N2763SZginodLAS VEGAS, NEVADAGreat hotel, great service from Antonio!
The hotel is so amazing! Antonio helped greet me and was so friendly and welcoming! He was an expert at the city and really provided such great service! Thank you ANTONIO for all your help in making my experience…
100gabriellaaHelpful late checkout
Antonio was nice and gave me a much appreciated late check out.
IgnaciaChileThe room was very spacious, the bed was very comfortable, and the staff were lovely and always willing to help. The hotel was better than expected!! Thanks!
However there was no AC and the breakfast was continental, but
D1338SFmatthewgA 2-star box nightmare
Our experience was underwhelming. The building was underwhelming and we did not stay the night, with the expectation that a refund would be fairly considered. The staff was unclear about this procedure and we were told…
thomasbT5994LYWonderful stay
Very nice stay at this small hotel with a true European feel. Terrific location near Union Square and Powell BART. Thank you Antonio for the great food recommendations.
Travel164826Great experience!
The Inn at Union Square is a lovely hotel. The staff were great; it's super clean, the value/price was perfect, and the atmosphere was beautiful. Thank you again! We will be back.
Reviews are written by guests who booked through our supplier and stayed, shown as written and in their own language. Category scores are the supplier’s reading of recent reviews, updated January 2026.
Where you’ll be
440 Post Street, San Francisco, CA, United States
Guests rate the location 9.8 out of 10 — exceptional.
Shopping
- Union Square100 m
Nearby
- Powell Street BART/MUNI Station200 m
Top attractions
- Chinatown (Grant Avenue / Stockton Street)400 m
- San Francisco Museum of Modern Art (SFMOMA)900 m
- Ferry Building Marketplace1.6 km
- Fisherman's Wharf / Pier 392.3 km
- Alcatraz Island (viewing / ferry access)2.8 km
- Golden Gate Bridge (southern end/viewpoints)6.3 km
Nature
- Golden Gate Park (e.g., Conservatory of Flowers)3.8 km
Airports
- San Francisco International Airport (SFO)19.0 km
Things to know
Cancellation
Each room shows its own terms before you pay.
Most rates can be cancelled free until a date shown on the room.
Non-refundable rates are marked as such.
House rules
Check-in from 4:00 PM until 12:00 AM
Check-out by 11:00 AM
Children welcome
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No pets
Non-smoking rooms available
Payment & property
Paid when you book, not at the desk.
Rates include the taxes and fees we can read.
The property may take a card at check-in for incidentals.
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The property accepts reservations and will rent rooms and other facilities to people under the age of 18 in cases where either (i) a parent or legal guardian guarantees payment of all charges for rooms, food and beverage, incidentals and damages incurred; or (ii) a person under the age of 18 is legally emancipated and can present documentation at check in showing they are emancipated and can legally contract for services. Guests are required to present at check in a valid photo ID and the credit card used for making their reservation. The name on the reservation, the ID and the name on the credit card must be the same. All special requests are subject to availability and additional charges may apply.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. A deposit may be required at the property.
What we’d check for you here
- How many rooms they will hold at once, for how long, and on what terms.
- That the step-free room is actually free on your dates, and whether it is a roll-in shower or a bath, which the listing never says.
- That the desk is staffed when you land, and that the room is held past cut-off.
- Whether the rate moves for your dates, and what it includes.
- What the property actually charges at the desk on top of the rate.
Questions about Inn at Union Square
What time is check-in and check-out at Inn at Union Square?
Check-in is from 4:00 PM. Check-out is by 11:00 AM. If you're arriving late, tell us and we'll ask the property to hold the room.
Does Inn at Union Square allow pets?
No — the property states that pets are not allowed.
Does Inn at Union Square have Wi-Fi?
Yes — internet access is listed among the property's facilities.
Can I book a block of rooms at Inn at Union Square?
The property lists meeting and banquet space, which usually means it handles group business — but how many rooms it will hold at once, for how long, and at what rate are set case by case and are not in any feed. Tell us the dates and the number of rooms and we'll get those terms from the property in writing before anything is charged.
Does Inn at Union Square have wheelchair accessible rooms?
The property lists step-free or accessible facilities. That flag is the one least able to settle the question: a hotel can carry it and still have a step at the entrance, or a bath rather than a roll-in shower, and it does not say whether the accessible room is free on your dates. Tell us what you need and we'll ask the property directly rather than reading you the flag.
Can I check in late at Inn at Union Square?
The property lists a front desk staffed 24 hours, so a late arrival should be possible. Standard check-in is from 4:00 PM. Rooms are still released after a cut-off at some properties regardless of the desk hours, so tell us your arrival time and we'll have them hold it.
How do I book Inn at Union Square?
Put your dates in above and book online, or call (888) 789-8585 and we'll do it for you — including things a booking form can't handle, like a block of rooms, a monthly rate or an invoice for your employer.
Where is Inn at Union Square?
440 Post Street, San Francisco, CA.
Other places we book in San Francisco
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