Depending on your preferences, we found that staying at Mystic seaport in Connecticut and Cape cod Mass. were our favorite locations. We stayed at a CG in Brewster on the cape. Bar Harbor Maine is nothing short of fantastic, with the trip onto Cadillac Mountain and local trips into the town. Lots to do and see, great resteraunts and shops. Boston is of course a must for history buffs, with great resteraunts along the wharfs, and worth a couple of days at least.
Burlington, Vt is nothing short of charming.
Thats my story and I'm sticking to it.

Safe travels and all the best.