good places to study for a few hours with wifi

[enochs-fable.livejournal.com]

I know Starbucks and Blue Shirt has wifi, but the former is often crowded and noisy, the latter doesn't have the most comfortable seating. The Somerville library (both West branch and main) are favorite spots for quiet study -- but the wifi is very unreliable. (I also wonder what I could do to help them improve the reliability of their network).

What places nearby do you find most conducive to studying with a reliable wifi connection when you need it?