Check out LaVista Beach Resort as opposed to just LaVista Beach. Same owner but the One with Resort in the name is on the beach. Actually the only thing between the unit and the beach is the pool. Here's a copy and paste from TripAdvisor.
Note that it's rated #1


La Vista Resort
256 reviews
#1 of 15 Specialty Lodging in Simpson Bay

Billy Folly Road 53 Pelican Key, Simpson Bay St Martin / St Maarten