Jérôme was the best host ever! He was so kind as to pick me up and drop me off at the train station, and let me tag along with him when he drove to Aix-en-Provence for te afternoon. He was incredibly welcoming, kind, considerate, and social.
His home is very beautiful and comfortable on the top floor walk-up, I felt like a princess in the lovely room! Thank you also for the petit-déjeuner each morning! So nice. I hope to see him again if he travels to New York City!
As for Marseille itself, I personally recommend a walk to Vieux-Port, Le Panier neighborhood, the beach, the Musee des Beaux-Arts or MuCEM. Cours Julien was such an interesting and unique neighborhood - I had a delicious and luxurious dinner at Pépé there at the end of the day. Marseille seems to bring some great talent in electronic music also if you're into that. Think artists from the Ostgut Ton label and Drumcode parties - pretty impressive. Uber home after dark.
Then the next day take a bus to the Musee d'Art Contemporain (MAC), or if you can't get a train to Cassis to see the Calanques, you can just as easily get a bus to the edge of the state park near Les Goudes (I took the 583 bus from the area near Avenue de la Madrague de Montredon/Boulevard Montrose then transferred to the 533 downtown to get back to Jérôme's place. Fairly easy.)
Thank you again, Jérôme! Wishing you all the best!