I love St Martin and have stayed on both the French and Dutch sides. Just for variety, may I please have your recommendations for similar Caribbean islands? Here is my personal wish list, but your recommendation doesn't have to meet all the criteria:

Weather: My ideal is sunny and 85F in winter, with water 80F.
Beaches: The beach is my main daily activity. I like having people around, but not loud music. Water should be clear, and deep enough to tread water and also touch bottom (about 5 to 6 ft for me). Sandy bottom safe for bare feet. Baie Rouge meets the criteria pretty well.
Scenery: Love green mountains and green trees.
Safety: US Travel advisory level 1 preferred.
Medical: Reasonably good hospital within a 30 minute drive. St Maarten Med Center met my needs in my one visit. I do buy airlift insurance.
Language: Need a place where English is spoken.
Dining: I cook my meals and rarely eat out, so I need a decent grocery store.
Serene: Want to avoid urban environments for lodging and beaches.
Evenings: I enjoy sitting on a deck where people pass by.

Thanks!