Hello all - there is now a desk/membership available at the p.irateship.
We're a hackerspace/coworking space (and coop) of about 20 people by Market Basket in Union Square, on Somerville Ave, and part of the Milk Row Creative Zone which includes Artisans and many others in the neighborhood.
Full desk membership is $200/month and you get about 100 sq feet. I'm in a quieter side room called the Spaceship.
Jeff