Riviera Deck or the Main Deck is the place to be. The lower you are, the less motion you feel. Getting on and off the ship at port is a breeze. The halls are quiet (especially at either end). The price is cheaper.
Why would anyone care that the crew is just below them is beyond me.
(cruzin' solo by design)
Freedom ('09), Imagination ('08), Victory ('08), Destiny ('08), RCCL Navigator ('08), RCCL Majesty ('08), Glory ('07), Liberty ('07), Fantasy ('07), Destiny ('06), NCL PofAm ('05), Fascination ('04), Victory ('04), Fascination ('04), RCCL Voyager ('03), Fantasy ('99)