Driving to La Garde Freinet from Nice:

When you leave Nice Airport follow the signs for the Peage A8, direction Cannes. Once on the Autoroute, take the direction to Aix-en-Provence getting off at Le Luc. Your total journey from the airport is about 100 kilomètres and should be no more than an hour and a half.
At Le Luc, leave the autoroute and follow the black and white signs for La Garde Freinet, Grimaud and St.Tropez