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Inn At Union Square

Property class: 3.5
3.5-star boutique hotel near Moscone Convention Center

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Photo gallery for Inn At Union Square

Premium bedding, pillowtop beds, in-room safe, desk
Reception
Meeting facility
Exterior
32-inch flat-screen TV with cable channels, TV

Reviews

9.2 out of 10
Wonderful

Popular amenities

  • Free WiFi
  • Business services
  • Housekeeping
  • 24/7 front desk

Explore the area

View in a map
440 Post St, San Francisco, CA, 94102
  • Place, Union Square
    ‪1 min walk‬
  • Place, SF Masonic Auditorium
    ‪5 min walk‬
  • Place, Moscone Convention Center
    ‪11 min walk‬
  • Airport, San Francisco, CA (SFO-San Francisco Intl.)
    ‪22 min drive‬

Room options

View all photos for Superior Room, 1 King Bed

Premium bedding, pillowtop beds, in-room safe, desk

Superior Room, 1 King Bed

9.4 out of 10
Exceptional
(38 reviews)
  • Sleeps 2
  • 1 King Bed

View all photos for Superior Room, 1 Queen Bed

Premium bedding, pillowtop beds, in-room safe, desk

Superior Room, 1 Queen Bed

9.2 out of 10
Wonderful
(123 reviews)
  • Sleeps 2
  • 1 Queen Bed

View all photos for Superior Studio, 1 King Bed

Premium bedding, pillowtop beds, in-room safe, desk

Superior Studio, 1 King Bed

9.4 out of 10
Exceptional
(13 reviews)
  • Sleeps 2
  • 1 King Bed

View all photos for Superior Suite, 1 King Bed

Premium bedding, pillowtop beds, in-room safe, desk

Superior Suite, 1 King Bed

9.2 out of 10
Wonderful
(13 reviews)
  • Sleeps 2
  • 1 King Bed

View all photos for Superior Studio, 1 Queen Bed

Premium bedding, pillowtop beds, in-room safe, desk

Superior Studio, 1 Queen Bed

9.4 out of 10
Exceptional
(23 reviews)
  • Sleeps 2
  • 1 Queen Bed

View all photos for Superior Room, 1 King Bed, Accessible

Superior Room, 1 King Bed, Accessible

Superior Room, 1 King Bed, Accessible

9.4 out of 10
Exceptional
(12 reviews)
  • Sleeps 2
  • 1 King Bed

View all photos for Suite (Spreckels)

Premium bedding, pillowtop beds, in-room safe, desk

Suite (Spreckels)

10.0 out of 10
Exceptional
(4 reviews)
  • Sleeps 2
  • 1 King Bed

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About the area

San Francisco

Union Square stay.At this Union Square hotel, you'll be steps from Union Square and within a 15-minute walk of Moscone Convention Center. Oracle Park and Pier 39 are also within 2 miles (3 km).

What's nearby

  • Union Square - 1 min walk - 0.1 km
  • Westin St Francis Hotel Glass Elevators - 2 min walk - 0.2 km
  • SF Masonic Auditorium - 5 min walk - 0.4 km
  • San Francisco Museum of Modern Art - 10 min walk - 0.8 km
  • Moscone Convention Center - 11 min walk - 1.0 km

Getting around

  • Powell St & Post St Stop - 1 min walk
  • San Francisco Station - 2 min drive
  • San Francisco Intl. Airport (SFO) - 30 min drive

Restaurants

  • ‪Golden Gate Tap Room - ‬1 min walk
  • ‪McDonald's - ‬3 min walk
  • ‪7-Eleven - ‬2 min walk
  • ‪Pacific Cocktail Haven - ‬3 min walk
  • ‪Level III - ‬2 min walk

About this property

Inn At Union Square

3.5-star boutique hotel near Moscone Convention Center
Free breakfast is available daily. WiFi is free in public spaces. The boutique Inn At Union Square also features a vending machine and an elevator.

This 3.5-star San Francisco hotel is smoke free.

  • 1 building
  • 30 guestrooms or units
  • 6 levels
  • Continental breakfast (free)
  • Front desk (24 hours)
  • Elevator
  • No smoking on site
  • 1 conference room
Inn At Union Square offers 30 accommodations with laptop-compatible safes and coffee/tea makers. Pillowtop beds feature premium bedding. 32-inch flat-screen televisions come with premium cable channels. Bathrooms include showers, bathrobes, designer toiletries, and complimentary toiletries.

This San Francisco hotel provides complimentary wireless Internet access, with a speed of 100+ Mbps (good for 1–2 people or up to 6 devices). Business-friendly amenities include desks and phones. Additionally, rooms include hair dryers and irons/ironing boards. Hypo-allergenic bedding, change of towels, and change of bedsheets can be requested. Housekeeping is provided daily.

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  • Business services
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includes taxes & fees
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Property amenities

Family friendly

  • Mini-fridge

Internet

  • Available in all rooms: Free WiFi
  • In-room WiFi speed: 100+ Mbps (good for 1–2 people or up to 6 devices)
  • Available in some public areas: Free WiFi

Food and drink

  • Free continental breakfast available daily 8:00 AM to 11:00 AM

Accessibility

  • If you have requests for specific accessibility needs, please contact the property using the information on the reservation confirmation received after booking.
  • Braille/raised signage
  • Elevator
  • Grab bar in shower
  • Low-height bed
  • Wheelchair accessibility
  • Wheelchair accessible (may have limitations)
  • Wheelchair-accessible path of travel

Room amenities

Entertainment

  • 32-inch flat-screen TV with premium cable channels

Bedroom

  • Blackout drapes
  • Hypo-allergenic bedding
  • Pillowtop mattress
  • Premium bedding

Bathroom

  • Bathrobes
  • Designer toiletries
  • Hair dryer
  • Private bathroom
  • Shower
  • Toothbrush and toothpaste (on request)
  • Towels provided

Food and drink

  • Coffee/tea maker
  • Mini-fridge

More

  • Desk
  • Iron/ironing board
  • Laptop-compatible safe
  • Phone

Policies

Check-in

Check-in start time: 4:00 PM; Check-in end time: 11:00 PM
Early check-in subject to availability
Early check-in is available for a fee
Contactless check-in available
Late check-in subject to availability
Minimum check-in age: 18

Check-out

Check-out before 11:00 AM
Contactless check-out available
Late check-out subject to availability
A late check-out fee will be charged

Special check-in instructions

Front desk staff will greet guests on arrival at the property
If you are planning to arrive after noon please contact the property in advance using the information on the booking confirmation
Information provided by the property may be translated using automated translation tools

Access methods

Staffed front desk

Pets

  • No pets allowed, but service animals are welcome

Children and extra beds

  • Children are welcome.
  • Rollaway/extra beds are not available.
  • Cribs (infant beds) are not available.

Property payment types

Important information

Fees

Guests will be asked to pay the following charges at the property:

  • Deposit: USD 200 per accommodation, per stay
  • Resort fee: USD 25 per accommodation, per night
The resort fee includes:
  • Faxes
  • Housekeeping
  • In-room coffee
  • In-room safe
  • Phone calls

We've listed all charges provided to us by the property.

Optional extras

The fees and deposits listed below will be charged at the time of service, check-in, or check-out.

  • Early check-in is available for a fee (subject to availability)
  • Late check-out is available for a fee (subject to availability)

This may not be a comprehensive list. Fees and deposits are subject to change and might not include tax.

You need to know

Extra-person charges may apply and vary depending on property policy
Government-issued photo identification and a credit card may be required at check-in for incidental charges
Special requests are subject to availability upon check-in and may incur additional charges; special requests cannot be guaranteed
The name on the credit card used at check-in to pay for incidentals must be the primary name on the guestroom reservation
This property accepts credit cards; cash is not accepted
Cashless transactions are available
Safety features at this property include a carbon monoxide detector, a fire extinguisher, a smoke detector, and a security system
Charges for extra guests may apply and vary according to property policy.
A credit card for incidental charges and government-issued photo identification may be required upon check-in.
Special requests are subject to availability at the time of check-in. Special requests can't be guaranteed and may incur additional charges.
    This property is managed by a professional host. The provision of housing is linked to their trade, business, or profession. The name on the credit card used at check-in to pay for incidentals must be the primary name on the guestroom reservation. This property accepts Visa, Mastercard, American Express, and Discover. Cash is not accepted. 
    For guests' safety, the property includes a carbon monoxide detector, a fire extinguisher, a smoke detector, and a security system in each accommodation. Cashless payment methods are available for all transactions.

Property is also known as

Inn Union Square
Union Square Inn
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
Inn At Union Square Hotel
Inn At Union Square San Francisco
Inn At Union Square A Greystone Hotel
Inn At Union Square Hotel San Francisco

Inn At Union Square Reviews

Reviews

9.2

Wonderful

Rating 10 - Excellent. 719 out of 1006 reviews
Rating 8 - Good. 175 out of 1006 reviews
Rating 6 - Okay. 61 out of 1006 reviews
Rating 4 - Poor. 25 out of 1006 reviews
Rating 2 - Terrible. 26 out of 1006 reviews

9.6/10

Cleanliness

9.4/10

Staff & service

8.6/10

Amenities

9.0/10

Property conditions & facilities

Reviews

10/10 Excellent

ERIC, Lincoln

Stayed 1 night in Jan 2026

8/10 Good

Malinda

Stayed 1 night in Jan 2026

2/10 Terrible

TOSHIKO

Stayed 1 night in Jan 2026

10/10 Excellent

Ramesh Murthy, Plainsboro

Business traveller
Liked: Cleanliness, staff & service, amenities, property conditions & facilities
The breakfast was fresh and good and internal amenities are very comfortable
Stayed 4 nights in Jan 2026

2/10 Terrible

Candace, Makawao

Business traveller
Liked: Amenities
Disliked: Cleanliness, property conditions & facilities
There wasn’t any fireplace in my room as advertised. The room was freezing I had to sleep in another guest room the first night. It wasn’t anything like I was led to believe!
Stayed 2 nights in Dec 2025

10/10 Excellent

Haley

Stayed 1 night in Jan 2026

10/10 Excellent

Jamese

Liked: Cleanliness, amenities, property conditions & facilities
Amazing!
Stayed 1 night in Nov 2025

8/10 Good

Lenny R., Odessa

Liked: Cleanliness, amenities, property conditions & facilities
The hotel had been renovated and professional stall.
Stayed 4 nights in Jan 2026

10/10 Excellent

Amber

Business traveller
Liked: Cleanliness, staff & service, amenities
Nice room great stay
Stayed 3 nights in Jan 2026

10/10 Excellent

Bonnie

Clean, quiet, and friendly staff
Stayed 2 nights in Dec 2025

8/10 Good

Kelvin

Liked: Cleanliness, staff & service, property conditions & facilities, room comfort
Breakfast options were alright. Staff was amazing. Room smelled like old smoke sometimes, though.
Stayed 2 nights in Dec 2025

10/10 Excellent

Thomas

Liked: Cleanliness, staff & service, property conditions & facilities, room comfort
Good continental breakfast. Room was comfortable and clean.
Stayed 1 night in Jan 2026

10/10 Excellent

David

Liked: Cleanliness, staff & service, amenities
Staff was nice, Beautiful room.
Stayed 2 nights in Dec 2025

10/10 Excellent

Manuel JR

Stayed 2 nights in Jan 2026

10/10 Excellent

Verleht Gail A, Woodside

Travelled with partner
Liked: Cleanliness, amenities, property conditions & facilities
Location 5/5 We always come back with a clean room 5/5 the only ick was the amenity fee of $25/day..no biggie if we were informed upon booking,but nevertheless we love the property.Will surely recommend
Stayed 5 nights in Dec 2025

6/10 Okay

christine

Travelled with family
Staff was helpful. Unfortunately the elevator was not working until our last day. My 2 suggestions-: 1. a larger breakfast room. (each of our 6 mornings could not accomodate seats at the table for all who entered during the first hour). 2. Removing the "air freshener" plug in devices in lobby and floors. They can and did cause nausea and headaches for those of us with fragrance sensitivities.
Stayed 6 nights in Nov 2025

8/10 Good

Simone

Travelled with partner
Liked: Cleanliness, amenities, property conditions & facilities
It's well located , quiet and clean, with friendly and helpful staff
Stayed 7 nights in Dec 2025

10/10 Excellent

Andrea

Liked: Cleanliness, property conditions & facilities
Lovely place! Clean and tidy, very nice housekeepers :)
Stayed 1 night in Nov 2025

10/10 Excellent

Jorge

Liked: Cleanliness, staff & service, amenities
O quarto estava sempre limpo e arruamado. A equipe de recepcionistas e arrumadeiras sempre gentis e atenciosos às nossas solicitações.
Stayed 5 nights in Nov 2025

10/10 Excellent

Anita

Liked: Cleanliness, amenities, property conditions & facilities
Awesome!!
Stayed 2 nights in Dec 2025

10/10 Excellent

Leon

Travelled with family
Liked: Cleanliness, staff & service, amenities
Everything was great: location, staff, food and amenities. I definitely will be back in the next visit to San Francisco.
Stayed 4 nights in Dec 2025

8/10 Good

Leia

Liked: Cleanliness
Everything was great from the service to the cleanliness. Only complaint was the breakfast options.
Stayed 3 nights in Dec 2025

6/10 Okay

Andrea

Liked: Cleanliness
We have stayed here before and had a very nice experience, however our most recent stay was not satisfactory. I am disabled and have mobility issues. We were told upon arrival that the elevator was broken and that our room was on the third floor. The person at the front desk although pleasant, gave us no option other than climbing three flights of stairs. My husband pushed for a better option and finally we were told that we could have a room on the second floor, which still meant me climbing two flights of stairs with limited mobility and a cane. The first set of stairs had no handrail and I nearly fell several times. After we finally arrived at our room we discovered that we had been assigned a room with 2 stairs at bathroom entrance. We were surprised that front desk person saw how much I struggled and still put us in a room with steps at the very end of a long hallway. Even being as cautious as possible I fell on the steps that evening. We tried to discuss issues with front desk person again and were told that it was out of their control. We had plans that night and the next morning which meant climbing two flights of stairs multiple times. It was truly an awful stay.
Stayed 1 night in Dec 2025

10/10 Excellent

Calvin, Coquitlam

Liked: Cleanliness, amenities, property conditions & facilities
It was everything really. The staff, the room the ambiance, the location. Even the breakfast was good. The room was very clean and comfortable and up to date. Enjoyable stay, thanks.
Stayed 1 night in Dec 2025

10/10 Excellent

Will

Travelled with family, Travelled with group
Liked: Cleanliness, staff & service, property conditions & facilities
Having a sitting room separate from the bedroom was nice.
Stayed 2 nights in Dec 2025