I am currently working out of the Caroline Collective when in Houston. They're a non-profit coworking outfit. (http://carolinecollective.cc/) I've already met some interesting people. (TX-RX Labs for starters: http://www.houstontechnologycollective.org/) This seems to have some of the benefits, but doesn't require travel outside of my home city.

If I wanted to do a startup that required 6-9 months of full time development, the room+board incubator sounds attractive.