With all due respect to Dean, I always make specific room number requests and I have been successful about 75-80% of the time.
I've had lots of different views, I think my favorite would probabally be of the Quiet Pool and as close to the main elevators as possible, while I always have a car being at the other end of the resort isn't that bad either.
The only thing I do not want is 1st floor, although it wouldn't be bad if it was near the pool.
My favorite 1BR units that I've stayed in would be 420 (Illuminations view),and 310 (pool view), the same numbers on other floors should be just as good.
Other good choices for pool views would be 236,238,258 same numbers on 3rd,4th, and 5th floors.