We had an absolutely perfect time here. Highlights include: the beauty of the location, the seclusion, the large amount of space both inside and outisde, watching both sunrises and sunsets, communication with the host, the onsite library, and the well-stocked kitchen.
I could go on an on about how wonderful this place is. Suffice it to say, it was hard for us to leave. If you have in mind to stay in a serene, beautiful house on the coast, I don't believe you can do better.
As far as the island is concerned, the Island Market is a well-stocked grocery store. We had neither the need nor the desire to leave the island during our week-long stay. The Turtlehead Preserve (visible from the house) is worth the hike.