Kristina is a very level headed person. If you read all the information provided before getting there, you will know what to expect and will not be disappointed. I think she's a sensible person, as well as approachable.
In addition, the hostel is only two blocks away from the BART subway station, which will take you to neighborhoods in Oakland, Berkley and San Francisco as well. It's worth mentioning that these trains go to both the Oakland and San Francisco airports. They also take you to the ferry terminal in San Francisco and many other interesting places. So much to explore...
As far as the hostel, everyone there was polite and no one ever touched the food I kept in the refrigerator. In regards to the room, it was just like on the pictures. You'll be provided a key for your room and your privacy won't be invaded. It really was a good deal!