Riding and other clubs (Tunis)

Hi! I am new to Tunis -- does anyone know where the best quality riding facility in Tunis is? I am an experienced rider and ride English - though I would welcome any suggestions even just a good place to go trail riding or someone who needs their horse to get more exercise.

I was also wondering whether anyone knew of any good social clubs that have a tennis court, a restaurant/bar, etc., as I have been member of in other cities. Many thanks for any suggestions!