Gladden Private Island There’s getting away from it all on a private island, and then there’s Gladden Island, where you and no more than three other guests will have the entire island and villa on the Belize Barrier Reef to yourselves other than the occasionally appearance of staff members (who live on a nearby island) to cater to your needs. Whether you’re with another couple or going solo, there’s plenty of room (and two master bedrooms) in the 3,000-square-foot villa that dominates the island, which also has a kitchen, swimming pool, and outdoor dining area.