If staying in Grand Manan, I highly recommend The Ferryman. As a guest, I appreciate these qualities: good hosts, privacy, surroundings, convenience.
This place has all four!
The hosts are very friendly, the ‘apartment’ has its own entrance and backyard - you see nobody else! The view from it can’t be beat (you can walk to the shore) and it’s in the middle of anything you would do on the island.
Whenever we find ourselves back in Grand Manan, this will always be where we stay.