As a general rule, higher floors farther from the elevators have better views and are quieter, but are less convenient. Lower floors and close to the elevator make getting to the lobby/pool and out of the resort easier. If you are good at taking stairs - finding the staircases at BWV with a room at the far end of the hallway is great, but if five flights of stairs is a lot or you have strollers, you are likely elevator dependent.
In my experience, the end result depends on the trip - when the kids were in the growing gills stage of using a pool, having a room on a low floor close to the lobby put us next to the stairs that got us to Luna Park with just one (maybe two) flights of stairs. With my mother in law - then in her 70s, right of the lobby made for fewer steps in her day - although a higher floor would have meant somewhat less noise.