Inn At Union Square - A Greystone Hotel is an independent hotel located at 440 Post St in San Francisco, California, approximately 0.1 miles away from 425 Mason Street (425 Mason Street).

The hotel has a 3.5-star rating. Check-in time is 3:00 PM. Check-out time is 12:00 PM.

The closest airport is San Francisco International Airport, approximately 11.9 miles from Inn At Union Square - A Greystone Hotel.

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