We took my parents up here for a week for their 50th wedding anniversary and had a fantastic time. The house is very nice - updated, clean, nice floor-plan, well-stocked, nice yard, screened in porch, and located on a great, VERY quiet cove where you can watch the tides roll in and out. My brother and I wore the ping pong table out!
The weather was also fantastic in July, and we got to do some great hiking, canoeing, and sight-seeing around the island. Took a nature cruise which we highly recommend, and saw bald eagles, seals, peregrine falcons, etc.
We'd definitely stay here again next time we come up to MDI and Acadia!
Kevin & family