Hello Jeff!
While few things in life are guaranteed, one thing I am sure of is this- at the end of a Disney Day, you will be tired! So tired that, unless you are a light sleeper, very few things will likely bother you.
With that said, I have found the top floor of any
Disney Deluxe Resort Hotels to be the quietest location. With the interior hallways and distance from any dining venues or lobbies, these tend to be the best places for tranquility. The exception to this rules
Disney's Contemporary Resort. If you select this resort, I would recommend the garden wings as they are farther from the hustle and bustle of the Monorail and Chef Mickey's.
If you will be staying at a Moderate or Value Resort, I would again recommend requesting the top floor and the building farthest from the pools and lobby areas. Please remember that all resort room location requests are not guaranteed, but I have not had any issue when using the parameters I have outlined since most Guests prefer rooms near the lobby and pools.
Another option if you really want the feeling of getting away from it all are the
Cabins at Disney's Fort Wilderness Resort. These stand along accommodations sleep six and include a full kitchen. This resort is as peaceful as a getaway in the woods.
If you have more questions, come on back to the Disney Parks Moms Panel- we love to help!
See ya real soon,
Anne