Thanksgiving week in Barbados. Christmas week in St. Martin. Any suggestions for lodging? In particular, has anyone had experience in renting a house/villa on either island?

You may want to check out Luxurylink.com I have purchased several packages from them with wonderful results. The packages do not include air. They frequently have some great buys at luxury spots. It's worth reading the site. It's broken into four sections: regular auctions, best shot auctions, best buys and exclusives. You can check by various criteria and locations. Good luck.