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All properties in San Francisco, California, United States of America
1 room, 2 adults

Inn At Union Square - A Greystone Hotel, San Francisco

3.5-star3.5 stars
440 Post St, San Francisco, CA, 94102, United States of America

Boutique hotel, steps from SHN Curran Theatre
  • Free WiFi
  • Collect stampsYou can collect® Rewards stamps here
Delicious food
Great room
Best value for money
Very comfortable

Inn At Union Square - A Greystone Hotel, San Francisco

from $167
  • Superior Room, 1 King Bed
  • Superior Room, 1 Queen Bed
  • Superior Studio, 1 King Bed
  • Superior Suite, 1 King Bed
  • Superior Studio, 1 Queen Bed

What’s around Inn At Union Square - A Greystone Hotel, San Francisco


  • In Downtown San Francisco
  • San Francisco Museum of Modern Art - 11 min walk
  • Moscone Convention Center - 13 min walk
  • Orpheum Theater - 16 min walk
  • San Francisco City Hall - 24 min walk
  • Exploratorium - 26 min walk
  • Lombard Street - 27 min walk
  • Oracle Park - 29 min walk

Getting around

  • San Francisco, CA (SFO-San Francisco Intl.) - 19 min drive
  • Oakland, CA (OAK-Oakland Intl.) - 25 min drive
  • Hayward, CA (HWD-Hayward Executive) - 30 min drive
  • San Carlos, CA (SQL) - 28 min drive
  • Concord, CA (CCR-Buchanan Field) - 35 min drive
  • Novato, CA (NOT-Gnoss Field) - 42 min drive
  • San Francisco Station - 23 min walk
  • 22nd Street Station - 4 min drive
  • Bayshore Station - 9 min drive
  • Powell St & Post St Stop - 1 min walk
  • Powell St & Geary Blvd Stop - 2 min walk
  • Powell St & Sutter St Stop - 2 min walk

At a glance

Key facts

Hotel size

  • This hotel has 30 rooms
  • This hotel is arranged over 6 floors


  • Check-in time 3:00 PM-anytime
  • Check-out time is noon
Front desk staff will greet guests on arrival.

Required at check-in

  • Credit card required for incidental charges

  • Government-issued photo ID may be required

Travelling with others


  • No cribs (infant beds)


  • Pets not allowed (service animals welcome)


  • Free WiFi in public areas

  • Free WiFi in rooms



  • No parking

Payment types at the property

Other information

  • Smoke-free property
* See small print for additional details or extra charges

In the hotel

Food and drink
  • Room service
Things to do
  • Bicycle rentals nearby
  • Scooter/moped rentals nearby
Working away
  • Business center
  • 24-hour front desk
  • Concierge services
  • Tours/ticket assistance
  • Dry cleaning/laundry service
  • Laundry facilities
  • Free newspapers in lobby
  • Luggage storage
  • Wedding services
  • Multilingual staff
  • Porter/bellhop
  • Number of buildings/towers - 1
  • Elevator
  • Safe-deposit box at front desk
  • Fireplace in lobby
  • Braille or raised signage
  • Accessible bathroom
  • In-room accessibility
  • Roll-in shower
  • Wheelchair-accessible path of travel
  • Wheelchair-accessible parking
Languages Spoken
  • English
  • Spanish

In the room

Home comforts
  • Ceiling fan
  • Coffee/tea maker
  • Bathrobes
  • Slippers
  • Iron/ironing board
Sleep well
  • Hypo-allergenic bedding available
  • Blackout drapes/curtains
  • Turndown service
  • Premium bedding
  • Pillowtop mattress
Things to enjoy
  • In-room massage available
Freshen up
  • Private bathroom
  • Shower only
  • Designer toiletries
  • Hair dryer
Be entertained
  • 32-inch flat-screen TV
  • Premium TV channels
  • Tablet computer
Stay connected
  • Desk
  • Free weekday newspaper
  • Free WiFi
  • Phone
Food and drink
  • Refrigerator (on request)
  • Free bottled water
  • Daily housekeeping
  • In-room safe (laptop compatible)

Inn At Union Square - A Greystone Hotel, San Francisco’s small print

Also known as

  • Inn Union Square
  • At Union Square A Greystone
  • Inn At Union Square A Greystone Hotel
  • Inn At Union Square - A Greystone Hotel Hotel
  • Inn At Union Square - A Greystone Hotel San Francisco
  • Union Square Inn
  • Inn At Union Square - A Greystone Hotel Hotel San Francisco
  • The Inn At Union Square Hotel San Francisco
  • Inn Union Square Greystone Hotel San Francisco
  • Inn Union Square Greystone Hotel
  • Union Square Greystone San Francisco


Guests can rest easy knowing there's a carbon monoxide detector, a fire extinguisher, a smoke detector, and a security system on site.

This property advises that enhanced cleaning and guest safety measures are currently in place.

Disinfectant is used to clean the property; commonly-touched surfaces are cleaned with disinfectant between stays; bed sheets and towels are laundered at a temperature of at least 60°C/140°F.

Social distancing measures are in place; staff at the property wear personal protective equipment; periodic temperature checks are conducted on staff; guests are provided with hand sanitizer.

Contactless check-in and contactless check-out are available.

Each guestroom is kept vacant for a minimum of 72 hours between bookings.

The name on the credit card used at check-in to pay for incidentals must be the primary name on the guestroom reservation.

We have included all charges provided to us by this property. However, charges can vary, for example, based on length of stay or the unit you book.

FAQs for Inn At Union Square - A Greystone Hotel, San Francisco

  • Are pets allowed at Inn At Union Square - A Greystone Hotel?
    Sorry, pets aren't allowed, but service animals are welcome.
  • Is parking offered at Inn At Union Square - A Greystone Hotel?
    Sorry, there's no parking at Inn At Union Square - A Greystone Hotel.
  • What are the check-in and check-out times at Inn At Union Square - A Greystone Hotel?
    You can check in from 3:00 PM to anytime. Check-out time is noon.
  • Are there restaurants at or near Inn At Union Square - A Greystone Hotel?
    Yes. Nearby restaurants include Morton’s steakhouse (1-min walk), Sears Fine Food (1-min walk), and Level III (1-min walk).

Recent reviews

Exceptional 9.4 From 419 reviews

Exceptional 10.0
Looking forward to our next visit
The staff was incredibly friendly and helpful. The location is great and convenient to rear shopping and transport.
Sixto, us1 night business trip
Exceptional 10.0
Super convenient, clean and accommodating. Great bed and snacks!
susan, us1 night trip
Exceptional 10.0
Beautiful hotel. Great staff, Charming, very clean and quiet. Loved breakfast , wine hour and the warm cookies . We really enjoyed our stay.❤️
Kim, us2 night family trip
Exceptional 10.0
Our Stay at The Inn at Union Square
We stayed here for our anniversary and we had the best experience! The hospitality was great! It was nice too that they provide refreshments and snacks for their guests. Breakfast was great as well!
Reyna, us2 night trip
Exceptional 10.0
Great location and value
The hotel is in an ideal location, right off Union Square. The personnel working in the hotel were all very friendly and professional. Our room was a nice size, as with the bathroom. The breakfast consisted of pastries, yogurt, oatmeal and cereal and hard boiled eggs, certainly enough to tide one over until lunch. We enjoyed the warm cookies put out every evening as well as the selections of tea. Our only negative was the elevator was rather small and slow. We will definitely stay here again on our next visit to SF.
Kathleen, us3 night trip
Exceptional 10.0
A very quaint hotel with wonderful hospitality. I will certainly return.
Cindee, us1 night trip
Exceptional 10.0
Our new favorite gem in San Francisco
We’ve stayed for 4-5 days in Union Square pre Christmas for 25 hears and have stayed at 10 or so $150-$350/night hotels multiple times in that district. The Inn at Union Square is our new favorite. Location: perfect; This is a small intimate hotel, 6 floors, one narrow hall that rooms come off of. Very quiet, very well appointed, pristine clean. Our room was spacious, not huge but beautiful. Everything felt new, great king bed, nice sized bathroom with new fixtures. Large TV with lots of channels. But here is what makes this place special, and we cannot name another hotel here with all these amenities in one place. 1. One person in tiny lobby friendly and always ready to serve you. Check in and out a snap. Advice on restaurants and things to do given. Never saw anyone else in the lobby so help was immediate. 2. Every floor has a sitting room looking out in the street. From 5-7 every night complimentary wine, soda, cheese and fruit on the second floor. We actually met and talked with fellow patrons in the evening and shared adventures. Never done that before.3. Every night freshly baked, warm, chocolate chip cookies in apothecary jars on each floor. 4. Second floor filtered water dispenser to fill your bottles 5. Breakfast included in small sparkling clean dining room with all the usual with freshly made yogurt and fruit cups. Lots of rolls, multiple coffees and teas, even almond milk. 6. The room: a safe, drawer space, a window that opens, silent heating,felt like home
Julie, us4 night trip
Exceptional 10.0
Extremely Comfortable and Satisfied throughout my 1 week stay. Steps from Union Square.
SergioM, us6 night business trip
Exceptional 10.0
Staff extremely helpful
Robert, us2 night trip
Exceptional 10.0
Wonderful place to stay
Nice location. Nice service. Loved the wine & cheese hour.
Tosifa, us1 night trip

Inn At Union Square - A Greystone Hotel, San Francisco

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