There is a lovely gorge place for swimming near Orpierre (), I think its here: Châteauneuf-de-Chabre but may well be wrong as it was a while ago...
Might be thinking of the place where you can jump in off a few things that's popular with the locals? If so I think it's called gorges de la meouge or similar..
There is a new locals guide out in a week or two I think. Keep an eye out on moon climbing Facebook.
I got pretty sick after swimming in the lake in Pellautier
Screw walking up the hill on a rest day.
The pizza place in Pelleautier is also top notch...little shack by the road. Great for some serious refuelling after slogging up the hill to the crag on a daily basis. Enjoy!