Why you should go: The sprawling Casa de Campo has achieved cult status among Travelzoo members. (Their glowing reviews are filled with words like, "amazing," "wonderful," and "paradise.") The resort's elegant environment, pristine beach and breadth of amenities and activities—award-winning golf, six gourmet restaurants, snorkeling, tennis—all receive accolades.

Members only: This exclusive offer saves 60% and includes perks like daily breakfast and one round of golf. All-inclusive packages are on sale, too.