I live just outside Cannes - there are plenty of rental aircraft, all about the same price. You are best off just choosing a type that you are already familiar with. Aeroclub Antibes have DR400 Robins, UACA have a mixed fleet of Pipers, Cannes Aviation are all DA40 and DA42. You don't say what level your flying is - but Cannes Aviation are an FTO and will expect a higher level than the other aeroclubs before they let you go solo. On the other hand, some of their instructors speak a bit of English so if you don't speak French you may have to go with them.