Thanks guys, those are good ideas. Now to go find a cafe.
I find I do best at a good old fashioned greasy spoon diner, where you can sit for as long as you want on a bottomless cup of coffee. I have settled in at Perkins, at Table 71 that's in the corner AND blocked off from the rest of the dining room by a partition of wall behind both booths. I also Like Borders Bookstore here in town, only they have no bottomless coffee and it's expensive when I work for 5 or 6 hours. But I think the energy of a bookstore helps, being surrounded by all the works of other people.
I've never been able to write at home, because that's my place for relaxing, not productivity. It's just the wrong vibe. However, I am getting an apartment by myself at the beginning of May, so maybe the lack of roommates will help.