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Inn at Union Square

San Francisco, United States

Inn at Union Square

8.9
Excellent324 reviews

440 Post Street

440 Post Street

  1. Hotels
  2. /Hotels in San Francisco
  3. /Inn at Union Square
WiFi availableFree WiFiNon-smoking rooms24-hour front deskHeatingLift / Elevator

Check-in / Check-out

From 04:00 PM · Until 11:00 AM

Classification

3-Star Hotel

Amenities

WiFi available, Free WiFi, Non-smoking rooms, 24-hour front desk, Heating, Lift / Elevator

Location

San Francisco, United States

Walkability

Walk Score® by Redfin
99
Walk
77
Bike

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.

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Location

How to Find Us

440 Post Street

San Francisco, United States

+1 415-397-3510

The Neighbourhood

What’s Nearby

Getting around
  • Powell Street & Post Street0.1 milesTram stop
  • Powell Street & Sutter Street0.1 milesTram stop
Markets & shops
  • Metreon0.4 milesShopping centre
  • Neiman Marcus0.2 milesDepartment store
Landmarks
  • San Francisco Museum of Modern Art0.5 milesMuseum
  • Toni Rembe Theater0.1 milesTheatre
  • Transamerica Pyramid0.6 milesLandmark
  • Dewey Monument0.1 milesMonument
Parks
  • Yerba Buena Gardens0.4 milesPark
  • Saint Mary's Square0.3 milesPark

Straight-line distance from the hotel. Each place opens in Google Maps.

What’s On Nearby

Mon 9 · 11:00 AM · +6 more daysYBCA GaHee Park: Behind the CurtainSurreal intimate paintings.Transbay11 min walkFrom $10Mon 9 · 11:00 AM · +6 more daysDread Scott: The Body PoliticProvocative political art.Transbay11 min walkFrom $10

FAQs

Common Questions

Check-in is from 04:00 PM and check-out is by 11:00 AM. Early check-in and late check-out may be available upon request.

Yes, complimentary Wi-Fi is available at the hotel.

The nearest station is Powell Street & Post Street, 0.1 miles from the hotel.

Sustainability

Travel That Gives Back

Every booking through Dyme directly funds clean energy infrastructure.

5,910 tons
CO₂ Avoided Annually
~271,000
Equivalent Mature Trees Per Year
15 Central Parks
Of Mature Trees Equivalent

Sustainability at Inn at Union Square

LowHigh
Local grid: Low carbon

The electricity grid in this region, not a rating of the hotel.

Emissions estimates are calculated using the local electricity grid carbon intensity for the hotel’s region, sourced from the U.S. EPA eGRID database (for U.S. properties) and Electricity Maps (for international properties). All sustainability information is derived from publicly available data sources, including hotel websites and certification bodies, and may not reflect the hotel’s actual energy usage or specific sustainability measures. Figures are approximate and provided for indicative purposes only.

Policies

Good to Know

Check-in & Check-out

Check-in from 04:00 PM. Check-out by 11:00 AM. Early check-in and late checkout may be available upon request.

Cancellation

Cancellation terms vary by rate. Flexible rates allow free cancellation up to 24–48 hours before arrival. Non-refundable rates cannot be canceled or modified.

Payment

Prices include the taxes and fees paid when you book. Some hotels charge a resort, city or service fee on arrival; where they do, the amount is shown with each room and at checkout. A valid credit card is required at check-in.

Important Information

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.

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Guest Reviews

What Guests Say

8.9

Excellent

324 reviews

Highlights

  • +Excellent location near Union Square and transit
  • +Friendly, helpful staff (several mentions of Antonio and Esly)
  • +Rooms described as spacious and beds comfortable
  • +Generally clean and well-serviced
  • +Good value/price noted by many guests

Could Improve

  • –Breakfast offering removed or minimal; complaints about misleading 'breakfast included'
  • –No AC in some rooms
  • –At least one report of stained bedding, dirty carpet and damp rooms
  • –Customer service/refund process criticized by one guest
Cleanliness7.5

Most guests praised the hotel as immaculately clean and well-serviced daily, but a notable review reported stained bedding, dirty carpet and dampness—bringing down the score.

Service9.9

Consistently very positive: multiple mentions of friendly, helpful staff (notably Antonio and Esly), late checkout assistance, and personalized local recommendations.

Location9.9

Frequently highlighted as a major strength: excellent Union Square location, convenient for cable cars and Powell BART, close to attractions and transport.

Room Quality9.2

Generally spacious rooms and comfortable beds reported by many guests, though at least one guest described an old mattress, stained bedding and lack of AC, so quality is mixed.

Amenities8.9

Small-hotel, European feel with basic amenities; parking available nearby. Mentioned drawbacks include no AC in some rooms and limited in-house offerings.

Value for Money9.0

Most guests described the price/value as appropriate or excellent, though one guest felt the room condition did not justify the cost—overall leans positive.

Food and Beverage7.0

Multiple complaints about breakfast: removal of a proper breakfast offering, reports of only a coffee in a thermos or minimal continental items and claims of misleading advertising.

Overall Experience9.8

Predominantly very positive overall: many repeat guests and strong recommendations due to service and location, despite isolated serious complaints about room condition and refunds.

Joanne

Extended Group · Oct 2026

10

A great, very clean hotel in Union Square.

Liked:We loved the location and the nearby cable cars. The room was large and immaculately clean. It was serviced daily. Friendly staff too. We would visit again.
Disliked:They no longer serve breakfast but there are plenty of options close by.

N2763SZginod

Couples · Aug 2026

10

Great hotel, great service from Antonio!

Liked: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 amazing! - Gino

100gabriellaa

Solo Travel · Aug 2026

10

Helpful late checkout

Liked:Antonio was nice and gave me a much appreciated late check out.

Ignacia

Couple · Aug 2026

9
Liked:The 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!
Disliked:However there was no AC and the breakfast was continental, but

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