I hadn't hear of Air Plus before - but after staying at Cathy's I know exactly what it is - rockstar Airbnb. Cathy's place was super clean and had literally everything we could need for my month-long stay with my mum and my son. Great set up to be able to work from there as well when I had some online work meetings to do.
Centrally located, lovely views and if you can't manage the SF hills there is a bus at the end of the street straight to the Castro underground and streetcar along Market Street. Plenty of locals shops to restock and a heap of options to eat out. Cathy was so generous with her time and provisions, would stay again in a heartbeat, great location.