Cecilia is a very nice and welcoming host. She is very helpful in giving information about the SF bus and subway system and how to get around.
The room is as described. It is on the first floor of their house. You are staying in their house which worked well for me. If you need absolute quiet, this would not be for you as there are the normal sounds of a family to be heard above.
Bernal Heights has one main street with a variety of restaurants that you can walk to. And parking is not a problem. The Mission is not far away and is accessible by bus.
A great place to stay if you want a clean, inexpensive room on the edge of San Francisco.