White Sand Beach in Khao Lak, Thailand. Photo courtesy of Tripadvisor "The long beach is perfect for leisurely walks, and the warm waters make for a delightful swim," Tripadvisor recommended.

It is simply authentic," says Samer Alhaj, manager of the JW Marriott Khao Lak Resort & Spa. The resort offers a unique attraction: Guests can swim in what is billed as the longest pool in ...