I was with my sweetheart while he did his MA at Dartmouth (2006-2008). I recommend the grad student housing (off campus just down the road- Sachem village) for families and students with S.O. and pet owners. On campus housing is decent for the single grad student. If you have a car (that drives great and has snow/winter tires) I recommend crossing the bridge and seeing what's for rent in vermont (like 5 minutes away). Unfortunately I think the only walkable option to your academic building is the on-campus housing.
oh, and BEWARE to the newbie new england people- you will be charged for your first shipment of oil heat at sachem village....that's something like $700 upfront....but double check, this might be old news.
and here's the local news paper listings
I hope I helped!