Ha-ha! Great photoshop idea!
I was so impressed and went to Google Earth (25°08′28″N, 55°11′08″E) to check the hotel images.
It is a pity, but there is a helicopter landing pad, not a tennis court...
It's actually a man made island that the hotel sits on, so the balls might wash up to shore, but there's only one road down below, and no residents living on it.