Why not have a look at the Gulf Coast villas on this site for your third week. There is a wonderful selection ( but I must admit to being a biased [msnwink])

Speaking from experience many of my guests come down to Rotonda West to chill out after the excitement and hectic pace of Orlando. There you will find beautiful beaches to help you unwind. You can play golf, sail, fish or just relax by the side of the pool. As others have said Busch Gardens is only 1.5 hours away.

You could look through the Gulf Coast section in the forum for information on the area.

Bernadette