Hi Tourer, We went in summer 23, you won’t be disappointed. Like you we traveled from north west England,overnight ferry to Caen(I know it’s a longer route)then diagonal across france(500 miles in a day on main roads) couple of days rest near Grenoble then drive through the frejus tunnel past Turin Milan and onto south lake garda(camping Baia verde(approx 370 miles).same route home.
So before the haters chip in with,oh that’s too far to drive towing etc…. It’s each to their own . I’m happy to drive , I’m nearly 50 so don’t need pee stops etc and I only can take holidays of 2 1/2 weeks max at a time, so get there set up enjoy then get home maximising time there. If I was retired I’d probably go Dover ,amble down the east side of France and then join my route,lovely and scenic going through Germany and over the Dolomites,but do you really want to tow over several mountain passes?
Whichever way you do it,it’s a stunning area.