Harold's place was great and just as pictured. We especially appreciated how clean it was, the lovely bed and the well equipped kitchen. My only remark would be that it could feel a bit closed in for tall people, since it is a basement area.
San Bruno is a good place to visit San Francisco if you don't want to stay in the city or don't want to spend too much on accommodation. We walked to the nearby BART station (10 min) for a 30 minute train ride to Embarcadero.
Above all Harold was a great host. Nothing we asked for (f/e use of washer and dryer, storing our luggage) was too much and he gave us some great recommendations for visiting San Francisco. And when we had trouble finding transport to the airport, because we didn't have a child seat for our son, he even drove is to SFO.
Definitely recommend this place and the host!