Overall, really liked Diane's spot.
The area isn't exploding with commercialism which, coupled with the walking proximity to the beach AND Golden Gate Park, was refreshing and fun. I live in a 750 sq foot apartment with my girlfriend, and both of us thought the space was perfect for two. The back garden hang out area was also a really nice aspect of our stay. We were out and about doing things in the city all day & night so we weren't spending a ton of time at the apartment itself, but it was great for a place to relax and reset. The bed was INCREDIBLY comfortable, and the living room area is nice to hang out in, read, and maybe have some breakfast. It was also nice that Diane provided a binder of good spots in the area (bars, restaurants, etc.).
I don't have too many criticisms, but staying on the bottom floor of a 2 story home with a family on the 2nd level brings its share of noise, but if you're out and about all day it's not a big deal. Also, if you're coming to SF for work and are dependent on a solid WIFI connection where you are staying, this isn't your spot. The internet here was spotty, but disconnecting on your vacation is a good thing!
I liked staying here a lot, and would recommend it.