i'm so sorry if it's been asked, but HARVARD: where do grad students "live"?? i hear there's no community, but for every college town/area, there's a "place" with a high density of grads and faculty in it—kerrytown in ann arbor; east rock in new haven; hyde park in chicago, etc. where is this in cambridge, esp. for harvard grad students?? i really appreciate this—it's one of those things that's hard to know unless you know, if that makes sense.