Sandee is incredibly in-depth, and the database is vast and comprehensive. There are thoughtfully written blogs on every beach that explain the details down to anything you would ever need to know, whether that be bathrooms, the color of the sand, and even the parking. I use it every time I go out with my friends as an easy way to get details on comparing beaches.
The page for Coney Island had amazing detail and actually gave me one or two new activities to try after eighteen years in NY. Love the site and I'm excited to see where you go in the future!