The VWL (Villas Wilderness Lodge) have two bedroom units that will accomodate up to 8 plus a child under 3 (that can use the Pac N Play portable crib). OKW and BWV have two bedroom units as well, and those two resorts also have three bedroom units that can accomodate up to 12 plus a child under 3. THe Disney Institute has units that will accomodate 5 or more and the Ft Wilderness homes/cabins will accomodate up to 6.
Often, two rooms at one of the All Star resorts will be less expensive than options elsewhere that accomodate 5 or more. If young children are part of the party, ask for connecting rooms. Although, Disney does not guarantee requests, I've never heard of a party with young children who didn't get that request.