Swapnights seems like a great idea.
I own a small, historic bed and breakfast, in the lovely, harbor town of Fairhaven, Massachusetts. We are located an hour from Boston, 30 minutes from Providence RI, 35 minutes from Newport, RI, 5 minutes from a mile long beach, 20 minutes from a 5-mile long beach and 20 minutes from Cape Cod. There is a ferry to Martha's Vineyard and Block Island a mile from the house. Our location is quiet, central and walkable to restaurants, shopping, beach, bike path, whaling museum,etc.
As for me, I love to travel. I have been to about 35 countries and want to see so many more. Maybe this would be a good way to help. Last year i went to Italy. The year before was Croatia, Slovenia, and Montenegro. The year prior was Africa.