Manhattan has never been the greatest place to find beaches, as that tearjerker is almost always rented out at Blockbuster, because it's really popular and good. But now, the trusty ol' A train can take you directly to an Adirondack chair-dotted one named La Marina, basically a classed-up version of Beekman Beer Garden with incredible views of the GW Bridge and the Palisades
to drive your very expensive boat right up to the joint watch very expensive boats drive right up to the joint on a wooden dock, though if you had your own, you'd have a much better chance of actually running A train yourself.
This multifaceted venue is a great alternative to living in Florida. You get three riverside bars, a man-made beach, and an indoor/outdoor restaurant with views of the Palisades, plus mooring services at the nearby docks, should you happen to have a boat.