We had a great stay in at Angelica's apartment in the Marina. Quick walk to Crissy Field in one direction or great restaurants in the other. The street was quiet (except for the Golden Gate Bridge fog horn one night, but that was pretty charming). The apartment is full of nice touches like extra pillows and a charger in the bathroom. We will definitely stay there again.
Only caveat: getting to the flat requires climbing two flights of steep stairs. I was glad I didn't have my dear old dad with me.