The room in Carl's home was very comfortable, with a large window and plenty of light.
My plane was landing late, so I used the self check-in. Carl's instructions were very clear and easy to follow.
I met Carl the following day. He is extremely helpful, friendly and warm. He made me feel welcome right away.
The "shared" bathroom was only used occasionally by Carl or his partner for a very quick shower; otherwise, I had it all to myself.
I would definitely stay here again on a return visit to San Francisco, and can highly recommend it.