Cowork! I'd go nuts if I were just sitting alone in my apartment all day, and bouncing around coffee shops isn't really my thing.

I'm in Denver and happy to make specific recommendations (I'm not officially affiliated anywhere but am a happy renter of a reserved desk); otherwise, check out http://www.deskmag.com/, Impact Hub, or if you're in SF, NYC, or Boston, throw a rock and check out whatever place you hit first (there's TONS of options).