Good location, small rooms, small bed, small shower.
We stayed 3 nights here, and while the location is good in terms of proximity to shopping (Union Square/Westfield) and transport to Fisherman's Wharf etc, it is pretty noisy and busy until late at night.
After arriving and checking out, we took the elevator to the 5th floor, and were faced with chairs and folded up beds in the hallway which we had to squeeze past. 
Our room was really small, the shower tiny, and my feet hung about 10 inches over the end of the bed. I'm about 6'1", so even average sized people would surely feel this. Additionally, our mattress was sunken in the middle, so we both rolled into it, which was quite uncomfortable.
Overall, an OK stay. Probably would only recommend it for the location though...