Nancy was an excellent host. She is very friendly and helpfully, she help me with the locations to visit, with the transportation and she was very helpfully with my big bags the last day. She rented me a bike, it was my vehicle during all my staying there.
The location is good, in the Latin district, I recommend to going to Valencia street, from 20th street it have many restaurants, bars and others.
It's very close to Castro, you can walking to there. Dolores park is close too.
The Bart is very near (2 blocks) and you can arrive to Union Square (center) in 10 minutes.
(Sorry for my English, I'm learning)