I have booked a gite on a complex near Les Eyzies for next July. It is about a 9 hour drive from Brussels I think but we will probably do it in one day on the way out. I want to book a further week somewhere else on the way back - so somewhere north of the Dordogne, roughly half way home maybe, but I am quite flexible.
Charente, Brittany, Loire? Happy with a gite/mobile home but would prefer s/c. I am normally a whizz at this, but I don't know where I want to go 
We spent a week near Cognac last year, but otherwise I don't know the western side of France at all. Pool/beach definitely required.
Any suggestions?