I did a week based between 2 alpes and alp dh’huez and made a day trip to Montgenevre for a change of scenery.
The town as mentioned above is quiet and a nice place.
The bike park however is not up to scratch compared to the other places you’ve already visited.
The black run at montgenevre is easier than the greens at les 2 alps. In fact when we arrived there there was a school bus of young kids + teacher/responsible adult heading to the chairlift. 3hrs and you’ve exhausted the bikepark and i wouldn’t go back for another day.
Don’t get me wrong, it’s worth a day visit to ride somewhere new but to put it into UK perspective – it would be like basing yourself at thetford forest for a change of scenery even though the riding at Wales/Scotland is significantly better.
Serre chevalier is close by but looks like another ‘do in a day’ place.