Hi Tracey,
Your upcoming trip sounds like one I took recently with my parents. They love to travel with their grown daughters, too. I have always said that you're never too old to appreciate the magic of Disney.
The most cost-effective way to have a private (or, in this case, separate) bedroom and two bathrooms is to book two adjoining or connecting rooms at one of the
value resorts.
If, however, you would prefer to all be under the same reservation, you could consider a one bedroom villa at
Bay Lake Tower at Disney's Contemporary Resort or at
Disney's Animal Kingdom Villas - Kidani Village.
The Treehouses at Disney's Saratoga Springs Resort & Spa have two bedrooms and two bathrooms. A two bedroom villa at any of the
Disney Vacation Club properties would offer the amenities you seek, too. The new cabins at
Copper Creek Villas & Cabins at Disney's Wilderness Lodge would accommodate your family nicely, as would a bungalow at
Disney's Polynesian Village & Bungalows. You don't need to be a Disney Vacation Club Member to reserve one of these villas.
You have a nice array of options. Let us know if you need any further advice as you decide where you'd like to stay with your daughters on your upcoming trip.
Wishing you many magical memories,
Jill