If it's mainly to do Ventoux then you can't beat this
http://www.veloventoux.com/
Craig and his lovely wife will pick you up from Marseilles airport, feed you handsomely, charge you very little for beer and put you up in a beautiful house in a beautiful village of Faucon.
I stayed there with a couple of friends but if you're on your own there may well be some other like-minded cyclists to team up with if you want.