Lucky Strike Lanes at the top of Jillians in Boston is a great place for a tweetup. Lots of space, really, really long bar, and confortable couches. There are a bunch of bowling lanes at the back, which in addition to the constant music could get old after a while, but it wasn't that bad. There is on street parkign if you can grab a space, lots of parking lots too, the one behind CVS costs $10.
