House rental with swimming pool and children

by Leo
(London)

I am looking for any recommendations on a villa/flat rental during August for a family with one sporty 10yo boy, it must have a large swimming with lots of children at the same age for playing time, it can be mixed Spanish & English speaking children, no fuss.

Tennis court will be a bonus

Prefer around Marbella - anywhere in costa del sol if the fun is guaranteed for the little ones!