11. Marquis Los Cabos in Mexico
The adults-only island offers a tranquil retreat from the modern world. The resort is all-inclusive, with infinity pools, elevated dining, and casitas that have rooftop terraces and gardens. The resort was opened in 2003, and it is considered one of Mexico’s top resorts. All meals and premium beverages are included in the stay. This includes four restaurants, coffee shops and bars. In one guest review, the sound of the waves crashing onto the sand was described as the perfect soundtrack to their relaxing stay.