We like the lower decks. Sure, you are farther away from everything, but its only an elevator ride away.
We also like it because to get off the ship - the exit is right there. Unlike the folks on the upper decks who have to walk down or take the elevator to the lower levels.
Plus...its quiet. There's no engine noises, no bar noises, nothing but the sound of the ocean lulling you to sleep. (shrugs) depends on what you like.