I lived a block from 3rd and 20th. It's a reasonable place to live, I liked it, and it is indeed next to Caltrain, the T, and the 22 and 48 buses. But there is

I lived a block from 3rd and 20th. It's a reasonable place to live, I liked it, and it is indeed next to Caltrain, the T, and the 22 and 48 buses. But there isn't a lot right there, it always takes at least fifteen minutes go get where the action is (i.e. the Mission). I recommend it for anyone who commutes to Stanford, Palo Alto, Mountain View, etc. but wants to live in the city... but if I didn't have my commute I probably would have lived in the Mission/Castro/Hayes Valley/etc.