Amy's apartment was nice. It's very small but has everything you need for a weekend in San Francisco. The location is amazing, a straight walk 5 minutes to the Castro and lots of lovely places to eat and drink near by.
As per the other reviews, you can hear quite a lot of noise from upstairs but it wasn't particularly early or late so it didn't really matter.
The negative I would point out is that we didn't feel very welcomed or comfortable during our 2 nights here. Amy sent messages before and during our stay here with a list of rules (shoes off in the house, turn off lights) and asking for specific check in/ out times which made us feel nervous in the apartment. The messages were templates with info added into them so they didn't feel very personal or welcoming.