Club Med is like that and they have programs for even the youngest kids if you like a few hours on your own!
We were at a lovely one in Antalya or around there in Turkey..gorgeous!
But having said that, why not rent a house with a pool and make your own time? You can pick city or rural, and go to markets and find your own fresh regional specialties or go out and try great restaurants.
They rent them in every country here through owners. We have done that for years here, going to Spain, France & Italy (all whom LOVE small children as a generalization!) and I know others who have gone to Switzerland and Germany, all very successfully. You can cater to your price range and find places in areas that have all you need for the gang. If you are interested, PM me and I can give you a few more details!