We have 4 nights with nothing planned in early May after we visit Nice. We definitely want to explore the Luberon and spend at least 2 of the nights in Aix-en-provence (unless people advise against that...), but other than that we're not too picky about where we stay! We enjoy quieter vibes (so not Marseille), nature, wine and food, history, and aesthetics (my wife is a photographer).
Would 2 nights in Avignon after 2 nights in Aix-en-provence be worthwhile? Any other cities/towns worth looking into? Thanks!