We enjoyed our stay at Ulrich's home. Ulrich is very precise and very carefull about its place with detailled rules. As a result, the place is very clean, nicely decorated so you could feel at home. The room is next to the street, so you can heard some buses climbing hills in the mourning, but it's hard to avoid in SF :)
Location is perfect to enjoy a nice stay. Ulrich is very reactive about everything.
We really enjoyed our stay.