We try to spend a part of every summer or late September on Martha’s Vineyard. It has been a summer tradition for Tom’s family since the 60’s and now my new family tradition. On the off season it is fairly affordable to book a bed at the Youth Hostel on the Island; they are super friendly and you have all the amenities that you will need. Otherwise the next cheapest option is Martha’s Family Campground (which the price range has risen extensively over the recent years). It is lush camping really, with indoor/outdoor showers, a necessity shop, toilets not port-o-potties, fire rings with grates, an arcade, electric hook-ups at an extra cost. They also have some cabins for rent but for an added cost. And the only vermin to watch out for are the skunks and the late night campfire singers like us who try to push the curfew. (No really we are respectful and try to end all shenanigans by 10pm). If you are down for camping then this may be your cheapest bet for housing on the island.