Probably best bet, on site, would be All Stars Family Suite or Art of Animation Family Suite...For the few extra $$$, I would go Art of Animation (see below).

Family Suites
Immerse yourself in the magic of spacious accommodations for parties up to 6—with room for the whole family to spread out—inspired by some of your favorite animated movies.

Family suites include a bedroom with one queen-size bed; one double-size convertible TableBed; one double-size sleeper sofa; living room; 2 bathrooms and a kitchenette.

Learn more about accommodations at Disney’s Art of Animation Resort.