Have stayed here before in Bourg St Maurice
https://www.camping-indigo.com/en/indigo-bourg-saint-maurice
Used to be called La Versoyen.
Looks like its been taken over by a bigger company. So be worth checking out other reviews in case its changed character.
But a friend stayed there last year and was happy with it.
Nice relaxed family friendly campsite.
5 min ride by the river to the funicular railway that takes you up to Les Arcs.
Swimming pool, tennis courts etc close by for the family.
Two supermarkets across the road, so no need to drive if you’ve parked up your motorhome for the week.
Pleasant walk into town through a forest by the river.
You can also head up to La Rosiere for riding.