For those thinking of getting away from the northern hemisphere's cold and snow in winter, St. Maarten is an ideal place to go. Nearly every day is the same: sunny, 82 to 85 degrees, water temperature about 79-80 degrees, and some fine resorts to choose from. Sure, there's always the chance of an afternoon shower but they come and go very quickly and usually only affect a small area of the island at a time.
Unlike some other Caribbean destinations, St. Maarten is relatively safe so you can explore the entire island and not be confined to your resort. There are lots of restaurants in every town to fit every budget, and some great shopping in Philipsburg and Marigot. The tour books are filled with recommendations but my favorite restaurant was Chesterfields, in Philipsburg; the best filet mignon I've ever had, good service and fine views.
The island has an abundance of gorgeous scenery and beautiful beaches, most with calm water even on the Atlantic, due to sand bars and reefs taming the waves. In the week I was there, I tried a few on the south and north shores, never encountering seaweed, jellyfish, or debris of any kind.
The only warning I would give is to be very careful if you're planning on renting a car while in St. Maarten. Many of the roads are very hilly, twisting & turning, but provide grand views of the island or coastlines; unfortunately, it's kind of hard to appreciate if you're the driver. In addition, there are very few road signs and those that are there are usually small and/or hard to read. While the majority of the roads on the Island are paved, they're generally in pretty rough shape with few/rough shoulders to pull off on to if needed. In order to cut down on speeding, huge speed bumps have been scattered about (usually encountered when entering towns or by some resorts and residences) that can wreck your car's front suspension if you hit them at 40-50 mph. Worse, a few don't even have warning signs to alert you! There are no traffic lights on the island, just traffic circles and stop or yield signs, and the locals drive pretty fast and erratic. Traffic in the larger towns, during the day, can be very heavy; parking is in short supply no matter where you go.
Overall, a great location with plenty to see and do; just not the best place for driving a car. Consider checking out my review and photos of the Divi Little Bay Resort, to be posted soon.