Two years ago, we ended up being assigned to a handicapped-accessible studio, on the top floor, just a couple doors down from the elevator. (We didn't need it or request it, it just turned out that way.) It was a great location -- not only close to the elevators, and VERY easy to reach the self-parking area, but our balcony had a GREAT view of IllumiNations. One drawback: it was close to the access road, so there was a little more traffic than some might like.
But we were thrilled, and would request a similar location again. (Don't ask me the number -- I forget! )