The Panier walking tour is excellent! Be sure that you start at the exact point in order to start the app. Definitely worth taking. The bus tour, on the other hand, is not worth its money. It does take you around the city, which is nice, but if you "hop off", there is a big chance you won't be able to "hop on" again for quite some time. It's better to stay on for the whole tour and then visit some places on foot. And the blue line did not operate at all. To visit the Norte Dame de la Garde, I recommend taking a little tourist train, it takes you straight to the top.

The tour was a great way to see the city in a short amount of time and the two routes took you past most of the city. There were several cruise ships docked on the day we took the tour and the crowds were overwhelming. We only got off at the one stop and we had to wait for a very long time to get back onto the bus as the bus that arrived at the stop was full, so they never let anyone else on. We were too afraid to get off again to explore for fear of not making it back to the ship in time. The traffic coming back to stop 1 was unbelievably heavy so further delayed getting back. We got back in time but it was stressful being stuck in traffic. Getting a taxi to and from the ship was extremely easy and costs between €20-€25 each way, depending on traffic.This was much cheaper than the shuttle organized by the ship, providing there are more than 2 people traveling together. All said, we wouldn't hesitate to book the tour again if we are visiting Marseille in the future.