I stayed there 5 nights and everything was perfectly fine to me. Nathalie is friendly, the room is good & the cats just did their cats life as expected : )
If I'd be picky I'd liked to be closer from the mains points of interests, somehow hotels are very expensive in San Francisco and I loved to save money on hotels and spend it on activities instead. Surely you will do too.
Also there are many public transportation options (bus 24 down the street, at 10/15 min walk the bus 14, the tram/metro J, and on the other side of Bernal Height the bus 9). Plus other options I didn't use myself.
Altogether I recommend Nathalie's place