I'm trying to choose somewhere to take the caravan this summer and have been recommended Annecy. But DH doesn't want to drive that far (apparently it's 11hrs from Calais when towing). And I'm a bit worried about how busy it'll be traffic-wise around Annecy. But now having seen how beautiful it is, I'm struggling to find anywhere better!
Teen DC want a water park, but a bit more than just slides, such as a lazy river/rapids too. A beautiful setting would be lovely, which kind of discounts the flat Loire. We're not fussed about beaches, so inland is fine. So basically Annecy, but closer to Calais. 
Does such a place exist?