Hi Kristen,
You are very kind to bring an extra guest on vacation with you! Family suites do hold six guests. You have a living room which has a pull out sleeper bed and convertible chair and ottoman. The bedroom has a bed and bathroom attached. There is a bathroom in the common area and a kitchenette as well.
I think you would like a little more separation. If so, you would need to look at a two bedroom
villa. These would have a master suite, sleeping in the living room plus another bedroom. It can be a dedicated two bedroom or a lock off. A lock off simply combines a one bedroom and a studio through a connecting door. This would give you a separate sleeping area as well as a full kitchen, two baths and a washer dryer.
For the family suites, you have the option of
All Star Music or the
Art of Animation depending on the time of your trip. Both of these only offer bus transportation however it is simple to use.
If you are looking at a two bedroom the Boardwalk or Beach Club offer a great location as you can walk to both Epcot and Disney's Hollywood Studios.
Wishing you a magical vacation!
Beth