We always stay in timeshares when we travel as a family. Most timeshare resorts also "rent" units like regular hotels do. You get more of an apartment style with a full kitchen so you can hit the grocery store on your way in and save a lot by avoiding eating out.
Also, I just got a Hot Deals email from MouseSavers. There's a deal for Buena Vista Suites which has 1 bedroom suites, free breakfast and transportation to Disney Parks. 2 Queen Suites sleep up to 6 as long as only 4 are adults. Depending on WHEN you're booking the deal is for 89$ - $109 per night. I'll PM you with the link and/or reservation code (they don't like you to share on public forums).
HTH
T.