If you’re looking for a really unique place to sleep, book The Royal Suite at Singer Castle on Dark Island. The luxurious two-bedroom suite spans an entire wing of the storied 1905 Beaux Arts castle and sleeps six, with a master bedroom with a king-size canopy bed and a queen-size sleeper sofa, and a second bedroom with a queen-size canopy bed and a full-size sleeper sofa. Rates include a catered dinner and breakfast and a personal tour of the 28-room castle, complete with secret passageways, sliding bookcases, a dungeon and underground tunnel. Accessible only by water, seven-acre Dark Island can be reached via private boat or public shuttle service from Schermerhorn Harbor. Private dockage is available.