It can be tough to find a beach that isn’t lit up like Times Square at night or overrun with tourists and local condo dwellers, even in the wee hours. Thankfully, this stretch of sand is dark and cozy, with a wall of trees offering a measure of privacy from the nearby homes as you and your sweetheart play a lovely game of tonsil hockey (and then some) under the stars. Sunset Beach, south end of Treasure Island