Rate: $150/night (five-night minimum)
OK, so maybe you can’t rent this ENTIRE island, but for $150 a night you can rent a room in the only house on it, which is still pretty exclusive, right? In its 1920s heyday, Lake Maranacook was a prime spot for East Coast urbanites eager to trade the sounds of the city for the sunsets of the lake. The island's house, which was built in 1910, offers three rentable rooms, the largest of which is apparently blue ('cause that's what it's called, the Blue Room). The rest of the house boasts a fireplace, screened-in porches, and a dock. Hosts provide transport to and from the mainland.