Best part was near Union Sq. and in Chinatown...
I was there for about 4 days approximately a month ago. The positives are the location and the price (approx. $115 per night with taxes) considering what SF charges for rooms. Unfortunately the negatives outweigh the positives-- extremely small room and bathroom, and a double bed with a big sag in the middle. Broken tile/dirty grout/basically a very run down room. No a/c so very warm during some warm weather there, then when it turned colder, no heat. Smelled musty and just "3rd world". Wasn't really up to American standards, despite the "you get what you pay for" was understood. 
The bottome line was would I stay there again? No. I would have researched a little more and found another basic, but more inviting space.