We enjoyed our stay at Loon Cove. The owner's directions were spot on - down to the fallen down chicken barn! Day trips to Blue Hill, Castine, Belfast, Acadia, Schoodic Point, Deer Isle and Stonington all very doable.
Weather was great, leaves beautiful fall colors. Owner called to make sure everything was OK.
For larger groups, the single master en suite bathroom upstairs for 3 bedrooms, might be problematic. However, for the 3 of us, it worked fine.
Really enjoyed the Adirondack chairs down at the pond and the quiet at night.