I stayed for 10 nights and it was great. The room was nice and very spacious. I just met Irina once because she was very busy. But her roommate Greg, who is in fact the host, is the best. He's always around if you need something and will give you great tips about San Francisco and what you can do. Besides, I always enjoyed talking to him about the Giants and other stuff. As there is only one shared bathroom, it can take a while in the moring. But since I never was in a real hurry, that wasn't a problem for me. The neighborhood is quite nice with many italian restaurants and cafés in short walking distance. There are also good bus connections to Downton San Francisco, the Caltrain station or Fisherman's Wharf. I would definitely recommend this place to anyone looking to stay in San Francisco!