I'm just picking this up so forgive me if I'm repeating what others might
However, have you considered going into Italy and hiking the Cinque Terre?
>From the that part of France, just drive east into Italy and it's a bit south
of Genoa. There shouldn't be many tourists that time of year and hiking the 5
towns might be just what you're looking for - That is, if you want to go to
Italy. Have a nice weekend.