Vanderbilt Tennis Club
Map: Surroundings & Nearby
Coolest location for a tennis court! But make sure you get on the correct elevator inside grand central because it's a maze in there!
If you buy one of those deals on living social or such, bear in mind the private lessons are held on a fake/mock mini half court, with an automatic ball machine. You won't be on a real tennis court.
If taking a lesson ask for Josh. So much fun and learned a ton!
Most secret tennis court in town!