As no one else has replied, I thought I might offer at least some information. We were there several years back, before it was taken over by Haven/Siblu. We thought it was a good site for teenagers, with good pools, beach and lake access. The showers etc were good,as were the pools, the on-site restaurant and shop adequate. The area has a fair amount to offer - Arcachon, Dune de Pyla, Mimizan etc, with Bordeaux, St Emilion and so on possible as more adult day trips. We certainly considered a return visit when our children were still teenagers, although we probably would not be rushing back there now that they have flown the nest!
I don't know how much it has changed since Haven took over, but we certainly enjoyed our holiday there.