Months spent viewing properties on websites was well rewarded with our choice of Gt. Gatsby for its location, accommodation and atmosphere. Our three weeks spent there with family and friends was that "once in a lifetime" experience, expensive but worth it. It's an eccentric mixture of shabby chic and "Big (beach) House" rough and tumble which suited us perfectly - large enough to allow space to do your own thing, get away from kids or congregate for card-playing/jigsaw puzzling. We dined in style in the evening, with anything from eight to sixteen around the table. Breakfast was more the rolling, make more coffee when the pot is empty style of easy-going arrangement. Mis-matched crockery and wonky toasters only added to the holiday vibe, with bagels doing better in the oven. Relaxing on the deck in the evening, on return from a bracing swim and outdoor shower, with a drink in hand, surrounded by family and friends, is an abiding and valued memory.
The house location is great for exploring Chatham and the Atlantic coast beaches, the ferries for Nantucket and Martha's Vineyard further afield, and of course for all that grocery shopping nearby. I would advise doing those trips early in your vacation as by the time Great Gatsby works its magic on you, all you will want to do is grab your towel and wander around to the Forest Beach and spend your time there, with other locals, swimming or sunbathing as time and tide allow!