We're heading to Provence and Cote d'Azur in June. I've read Rick Steves' advice in the France guidebook about not having items in the car because of theft. With that in mind, if we rent a car at the TGV station in Avignon and head to our B&B near Roussillon, should we really not make sightseeing stops in other hilltowns along the way even with our bags locked in the trunk? And If we leave our B&B in Arles, is it also safe to make several stops along our coast drive to our hotel in Villefranche-su-Mer? Am I reading too much into his multiple cautions? Or might he mean leaving luggage, etc. out in full-view?
Also, it is doable to drive from Arles to Cassis (and see the calanques on a boat) then drive to Antibes (via Toulon and Frejus), then Nice (saving this city for exploring the next day) and end up in Villefranche-su-Mer all in a day? We were wondering how long the driving part of the journey would take.
Finally, feel free to recommend an ideal rental car model (i.e., size for roads) for 2 people driving in these two areas. We'll be renting in Avignon and returning in Nice.