Don't forget to consider the Marriott Vacation Club properties in Orlando (which are bookable as hotel rooms on marriott.com). I've stayed at several (Grande Vista, Harbour Lake, Lakeshore Reserve) and found them all to be of excellent quality. The fact that units can have full kitchens and even 2 bedroom/2 bath are available works out great for a family trip. Usually activities on site too, with great pools, playgrounds, etc

-db