I was several days here and I can say some mostly good things:
1. Very good location, but not central. You're really close to the BART and also to one of the main streets, but you'll be in a calm and good neighbor. It's really calm, I insist on that. The only zone that could be a little difficult is Mission st., but only if you're alone in the night. It's a really good location if you want to sleep and rest, and not only know the city.
2. The apartment and the hosts attention are awesome. They are always receptive and have very good disposition. The apartment has all the essential features and utensils. Is clean and comfy, and have very good heating.
3. The only bad review is that the little room has a very bad bed, that must be replaced, because it really sounds with every movement. It also has curtains that basically don't block any light, so it can be difficult to sleep after sunrise.
In conclusion, it's a very good airbnb that could be even better with little adjustments. The price I think it really reflexes what your'e getting.