Harpswell Haven by the Sea is perhaps the closest thing to paradise that my wife or I have ever found on Earth.
The cottage itself is BEAUTIFUL, with plenty of space for two or three families to comfortably hang out together without even being in each other's way, located just thirty steps from the bay, with a deep-water anchorage and a dock suitable for large boats, kayaks, canoes or swimming.
The world outside your windows is on amazing display; the living room faces full-size windows that look out onto the bay. Seals, sailboats, bald eagles and beautiful sunrises are part of every day. (I was untying a kayak and a seal came right up to me to see what I was doing -- it was the closest I've ever seen one in the wild!)
There are tons of amazing attractions in the area, including the Maine Maritime Museum, but most exciting for me was the kayaking and hiking. The bay is well-sheltered and the dock makes launching easy, but the ocean is close by, so novice and expert kayakers alike will have plenty to be happy with. The hiking trails are beautiful, well-maintained and nowhere near crowded, which is another huge plus in my book.
Most importantly, though, the people managing this property are wonderful. We broke a window on our first night there. (Long story... accidents happen.) My wife and I were absolutely mortified, and Sheri was the most understanding, patient, kind and wonderful person to deal with through the entire process of getting that resolved. She worked super hard to ensure the fix would be fast, cheap and not interrupt our vacation (even though we had put her through quite a lot of stress!)
I cannot wait for the time when I'll have a chance to visit again. My wife and I are already making plans.