A place for a project with children

Hello !!
I'm coming in february, march, april for a project with children..
That's why I am looking for a no-touristic place, by the sea, where children would be happy to play tennis for free, where children will never have the opportunity to play tennis or to make any sport !!
If you know a children's center or a school or something like that, let me know please.
Thank you
Tio

Welcome to the forums!   Not sure where to tell you they need your help -  there are just so many choices!!!!

I thought saying "by the sea" and "a no-touristic place" would be difficult to find...
So could you just tell me a place like a small town or a village (or a part of the country) where the tourist don't go (y the sea) ?

Cabrera,  parts of Samana, Most of the  north west,  all of the south west coast,   la Romana (where I live not many tourists actually in town)

I could come to La Romana as I found an orphenage located in Alto San Carlos. But I haven't written to them yet.
How is life there in comparison with the north coast ? Expensive ? Peaceful ?
Anyway thanks !!