St. Martin (the French side) and Sint Maarten (the Dutch side) offer a high-quality retirement for those seeking a "European Caribbean" lifestyle. The French side (Marigot) is ideal for those who value fine dining, chic boutiques, and a quieter, more relaxed pace, though it carries a higher cost of living similar to France. The Dutch side (Philipsburg) is a tax-haven favorite with no property taxes, no capital gains tax, and no customs duties on personal imports, making it highly attractive for protecting assets. However, healthcare is limited due to the island's size; while both sides have hospitals, serious conditions often require an air-lift to the US or Europe, so comprehensive medical insurance with evacuation coverage is mandatory for retirees. For active seniors, the 37 beaches and stable banking system provide a secure and vibrant tropical playground.