I had to vote Sheraton Vistana....I own there! And I absolutely LOVE it!!!!! I wouldn't hesitate to stay there. Exactly when are you going? They are updating the ENTIRE resort. I think by the end of next year, only 1 or 2 sections will still be older. Who knows, they might even be refurbished, too!
PM me with ANY and all questions. We stayed there for a week last year and never even left the property! NO PARKS OR ANYTHING!!!!! We took the time to really enjoy the resort.
The location can't be beat. It's right near I-4 on 525. Not too far from the entrance to DTD...and also the International Drive entrance, too! PERFECT location!!!!
Here's a link to a blog that featured Vistana Resort. It's a good read and really gives you a feel for the resort!
Love your Family