When I'm in the Bay Area I love working at the public libraries. If I remember correctly the San Francisco Public Library's main branch offers a free wifi conne

When I'm in the Bay Area I love working at the public libraries. If I remember correctly the San Francisco Public Library's main branch offers a free wifi connection at about 45mbps down and up; and they don't block port 22, so you can ssh all you want. There are also plenty of people working there, and you'll probably notice some other people coding. The only downside of libraries are the hours (which are often very limited) and the lack of food. Also it's not a great place to take phone calls or work in groups.