Our St John villa, Great Expectations, has the only doubles tennis and basketball court on the island. Over the years the court has been used by kids & adults as well as beginners & pros. If you think basketball and tennis are the only activities for this court, you'd be wrong. This large fenced in area serves as a great (and very safe) 'playground' for kids using footballs, soccer balls, large beach balls, and yes, tennis and basketballs. We have them all! Tennis racquets, too.
The court is unique in another way in that the view is fabulous. Peering out over Chocolate Hole you can watch the boats come and go from the harbor and often see cruise ships pass by the mouth of the harbor. It is often hard to keep your eye on the ball while there is so much beauty surrounding you!