Hi Diana,
Welcome back to the Disney Parks Moms Panel!
I think that the best choice for your family's upcoming visit to Walt Disney World Resort is unquestionably a Family Suite at
Disney's Art of Animation Resort. I've stayed there a couple of times now, and it's not only a bright and colourful Resort, the Family Suites have plenty of space for all of you to spread out. There are two bathrooms, a kitchenette, and a "master bedroom" with a queen size bed, a pull out sleeper sofa and a murphy bed. I've actually slept in all 3 beds in the Family Suites and I can confirm that they're all comfortable! You can also request a Pack N Play for your littlest one, which means that only two of your kids need to share a bed. Depending on availability, you may also be able to request a cot at check-in for a nominal fee, which could also help solve any issues associated with bed-sharing!
Another option would be
The Cabins at Disney's Fort Wilderness Resort. Several of the cabins have been recently refurbished and most of these units have a bunk bed and a full kitchen. I love the natural and rustic feel of this Resort; it definitely feels as though it's far removed from the hustle and bustle of the Theme Parks.
Of course, if you're willing to splurge a little bit, you can always book a 2 Bedroom Villa at any of the
Deluxe Villa Resorts. There, you'll get a full kitchen, 2-3 bathrooms, a washer/dryer and enough beds so that none of your kids has to share with one of their siblings. My two favourite Deluxe Villa Resorts are Disney's Animal Kingdom Villas - Kidani Village and Disney's Beach Club Resort.
Have a Magical Day,
Lynne