Suggest you stay away from both ends and shoot for the middle somewhere. We were there last fall and specifically asked to be far away from the ferry dock as we had been cautioned about noise from the ferry boat horns. Disney happily accommodated and put us in 7001.
I was surprised how close the MK launch comes to that unit... blasting it's horn when approaching, and backing up, and leaving. When leaving the boat is facing directly at the bungalow as it blasts its horn. I found it impossible to sleep even with white noise generator. The walls/windows/doors were simply not designed to silence, or at least muffle, that kind/level of noise. With late EMH, we had launches there until 1:40 AM... it took everything I had to not get out of bed, storm out on the deck and throw something at the boat.
At least these are inexpensive units to occupy so you don't mind problems that interfere with the basic purpose of rest... yeah.