Recently completed construction, the house was a perfect place for my wife, me and three kids (11, 9 and 5). Soon after we arrived, my son was quietly crossing the gravel drive to capture pictures of a doe and her fawn. Positioned above the center of town by a short drive with the deck overlooking a small stream and evergreens on two sides, it felt mostly private. (The other two cottages are a little higher in elevation and appear to have a partial view of the harbor below).
The kids loved their own place in the basement. My wife and I stayed in the loft where we could sleep in yet be close enough to the kids while they woke.
As for convenience, we used the kitchen for breakfast and a few dinners. The third stop of a two-week vacation, the washer and dryer were extremely helpful.
One evening we used the firepit and roasted hot dogs and marshmallows. (Next time we'll have to use the grill).
We found the Southwest Harbor to feel more local than touristy while providing great options to grocery shop (Sawyers is really close and fantastic -- IGA is further out with decent options too).
Side note: far from a problem, we were unsuccessful in connecting to the owner's wi-fi (something he suggested others experienced). And, we were not able to get Verizon wireless signal west of Somes Sound -- really not until we approached Cadillac Mountain and Bar Harbor. This was only a minor inconvenience and added to 'getting away'.
I hope we're able to return sooner than later!