In reply to Willy: hi willy, i liked Les Chosalets near Argentiere, the owner is a bit funny,but its a nice site, not quite level unless your lucky,there's a nice place to stay out of the rain to plan your days out, you get a free travel voucher for the bus and train to chamonix which lasts all week.
cant remember the costs, but its reasonable, you do have to pay for nights when your away though, unless of course you remove your tent , but then you may come back to a full site!
this is the site for the conville course, so you may recognise some faces.
there is a hut/reception, where you can buy fresh bread etc.
the local village has a nice bar with happy hour and the best pizzas ever, and a very fine lady too.