Ideally you should try to buy a home in Otis as it is indeed the place
to be. If you want to visit there are a number of places you can stay
like the Maple Wood B & B. There is also a multitude of campgrounds
including the state park which have access to Otis Reservoir.

If you aren't interested in roughing it, but you want to get on the lake there are a number of rentals available.