I would stay at an underwater hotel.
The world's first underwater hotel is coming up at Bahamas and a days stay is gonna cost you approx USD1500.
Read more about Poseidon, which is the name of this resort.
If I remember right, Poseidon is the greek god of sea. [Who said, playing Age of Mythology does not have its uses..:-)] So they have got the name right, though it is also the name of a well known UML tool.