Marriott Executive Apartments (grass court)

Located in central Bangkok, there is a hotel with a tennis court on its roof for you to utilize. If you're not afraid of heights, you might enjoy the city view. You can play golf as well, next to the court.

The surface got the looks of a grasscourt, but it contains a little bit too much sand which causes the ball to drop low.  

Note: at least one person got to be a hotel guest or condo habitant.