If you have a little more time to spare, consider visiting a nearby village such as this and mix a bit with the locals.
A fishing village on the edge of the sea.
A half hour from Marseille, charismatic Cassis is the quintessential fishing village filled with postcardworthy vessels (known as pointus in the pointed local dialect). Here you'll find some of the best and freshest seafood on the Côte d'Azur, accompanied by crisp, locally produced white wine, and it's also a great place for a summer day at the beach and beach bars, returning to Marseille at sunset. For other outdoor activities, the coves of Cassis are famous for their crystaline waters loomed over by imposing limestone cliffs, which you can hop between by boat. There are also hiking routes into the local forests, and diving outfitters which will take you out to the best nearby offshore sites to experience some truly extraordinary submarine landscapes. Yes, you must see Cassis.