4. Little Palm Island, Florida Keys, USA
Little Palm Island in the Florida Keys, USA, is another luxurious private island for adult tourists. It is an ideal location for travelers looking for the most luxurious private islands in the world. They are not allowed guests under 16.
The island is a small luxurious place with excellent rooms. But there are no telephones or televisions in the rooms. While you are there, you can see just thatched oceanfront bungalows. In addition, the island has a pool, a spa, and private dining for relaxing and unwinding. Consider choosing this island if you want to plan to travel to the most luxurious private island this year!