Have had holidays in Spain, France and Italy in the past but have never stopped on the French coast. Taking family and it is son in laws first time touring abroad and he is not keen to travel too far (has not got the bug yet but I'm sure that will change.)

Travelling school holidays, having a couple of nights stopover at euro disney for grandchild.
Looking for a site within 5-6 hours travel south of Paris, near to coastal beach, picturesque area but not too quiet for teenagers. Good sized pitches to accommodate 22ft caravan with 2 bedroom annexes.

so much to choose from, Any suggestions?