Four of us (adults) stayed here and it was just as it says... A walker's paradise. We walked everywhere. You are very close (10 minute walk through Stockton tunnell) to Union Square and it is also a lovely walk down to Fisherman's Pier and the wharf area. We walked safely around the city and ate out in Chinatown for dinner a few nights.
Highly recommend the Custard Tarts from any Chinese bakery shop anywhere on Stockton St.
The welcome basket of wine and mineral water was appreciated although we didn't drink the wine.
There are plenty of books and guides on San Francisco to read and the internet access was great.
Beds were very comfortable. Bathroom very tiny.
A few noisy foot steps in the apartment upstairs. But never late at night so not too much of a bother. I think there was a small child who liked to run around.
No washing machine which is noted in the amenities list. We found a laundromat less than 2 blocks away.
We were able to check in a couple of hours early.