The Rainforest room is part of Vista Spa and it's AWESOME.. There are3 different sauna rooms with varying aromatherapys and there are 2 different rain forest aromatherapy showers. There is a big main room is all mosiac tile and there is a fountain in the middle flowing water into the fountain pool below.
They play soft "mood" music to relax you - like you would find in a very upscale spa and they have 3 or 4 of the best lounge chairs ever. They are made of little 1" tiles and they conform to your body. Best part they are HEATED....ummmmmm.... worst part, the chair is too relaxing and you end up snoring!!! ha ha
Its a great place to relax, get out of the sun, be quiet for a while, take a nap and just rejuvenate.
If you are having a spa treatment done that day then the cost is less, or you can purchase the room for the entire cruise for a discounted price.
I normally buy one or two days but some people stay in there a lot.
ENJOY