Location, location, location!! You can't get a better place to stay for your trip to San Fran. Todd and Amy's apartment is right on the border of the Mission and the Castro. 2 of the most fun and interesting areas to hang out in. The apartment is bright, modern and very comfortable and close to the BART and bus which will get you to everywhere else you want to go. Todd and Amy are excellent hosts. As others have mentioned, the map they make is great in letting you know where all the nearest shops, bars, restaurants etc are.
Bed is really comfy and the shower is great. There are lots of great cafe's and restaurants to eat in. We'd recommend Morning Due cafe (5 mins walk) for breakfast / lunch. Also if you like Mexican food, you will be spoilt for choice here.
As others have mentioned, you are staying underneath an apartment but the white noise machine (first time we ever used one) is fantastic and we had no problem having lazy mornings and sleeping in.
We took a while looking for somewhere on airbnb and think this apartment was the best we saw by a mile for location, size and the fact that it is spotless as it is so new.
We would definitely recommend this apartment. Roisin and Stevie