We used
"5 Star Resort Rentals". I have no affiliation with them--found them on the "offsite" board here, and they had the cheapest quote. I was nervous because their quote seemed too good to be true, but we took the trip in May '12 and everything went smooth. All transactions were made through paypal.
I would use them again in a heartbeat! I would actually like to visit another Wyndham resort through them, but have to figure out a way to fund it.