At this place you get value for your money. It's near the Union Square and it's easy to take the train from the Airport. You can email the hostel and they tell you everything. The room was small, but cozy with a big old tv that worked.
The staff were nice.
The block is full of homeless and stoned people and there's actually a soupkitchen next to the hostel.
Depending on the money, the location is great though and near to everyting. Here's a pic of the room http://beammedown.blogg.se/2013/november/if-youre-going-to-san-francisco-be-sure-to-wear-some-flowers-in-your-hair.html