Looking for destination ideas for family with 9 and 12 year old children. Ideal criteria are:
Somewhere with stuff to do. Activities etc. MTB, watersports with ability to hire. Would not be taking any gear for cycling or climbing etc.
Reachable by train for most of journey (car hire and drive for last leg is fine)
Budget conscious. All included exclusive resorts are out.
Ideally not peak tourist areas but balanced with there being enough to do.
Been looking at French Alps, Ardeche, Pyrenees but having holidayed almost exclusively in UK since kids and not knowing the areas I'm not very good at this. Wondering whether others have any general or specific recommendations.
Thank you.