I am not a seasoned hostel-goer, but I thought this one was really nice. The facilities were clean, lots of outlets for charging electronics, quiet hours enforced after midnight, comfortable and bright common area. The location is good as it's a short walk from Market St, and from there you can find public transportation to most places you'd want to go. The staff was friendly and warm right off the bat, and there was just a really nice vibe to the whole place. It was definitely a very social environment. Admittedly, it was my first time in SF and I was only staying a few days, so I was kind of more interested in doing my own thing than in socializing, but I still definitely appreciated the communal feel of the place and having people to chat with once I was in for the night.