Imagine checking into a hotel which actually provides the unique experience of sleeping underwater!
The Manta Resort near the coast of Tanzania provides such an experience as you will actually be staying on a floating resort with an underwater room where your bed will be.
While this is truly unique, you can imagine sleeping alongside all the ocean wildlife may not be for everyone! After checking in on land you are boated over to the floating resort where an optional butler awaits and you are only a call away if you want to be shuttled back to land. The fridge is fully stocked, the toilet is fully functional, there is shower and an awesome outdoor patio hangout space. Dive off of your roof, relax with a drink, and then go downstairs and sleep with the fishes! Check out this amazing, one of a kind hotel experience!
Source: http://damn.com/under-water-hotel-tour/