I don't know about availability, but I stayed
here. The Inn was recently restored, and is in good shape. Owners live onsite, and were very pleasant. I found it to be a nice, charming place. Maine in the summer has generally pleasant weather. The beach was okay (water is always cold in Maine). The pool/hottub at the hotel were nice enough, so we stayed there. The restaurants were good. The nightlife, while small and diverse, was fun. I'd go again, but probably for only the weekend. Because I know the OP is an intrepid shopper, the Outlet Malls in Kittery, ME are pretty good. Treat yourself to a high-end dinner at the White Barn Inn in nearby Kennebunk.