We bought a 24 hour pass but on the day to validate our pass, it was a national holiday, Bastille Day and everything was either closed or closed early. As a result, we didn't use any of the transportation. Everything was within walking distance of what we wanted to see. If you are planning on spending more time there, then the pass allows free access to many museums so it might be worth it, according to your itinerary.

We never used the passes. We found that walking and the Metro was much more fun.

Very efficient and worth the money

Definately get the city pass. Worth every cent. Buses and metro are on time and take you all over the city. Certain buses get more crowded than others, but best way around. Also, visit the museums. I did not have time to hit them all, but the museum at Palais de Longchamp had some wonderful sculptures and paintings.
My trip time was limited but a good week here should allow plenty of time to see the sights in a leisurely mannar.

A must to have if you want to discover all the places in Marseille. Totally worth it!!

This was a great deal! It gives you access to everything you want to do and see, lots of parks, museums and cool activities! And the all the public transportation which was a HUGE lifesaver! Marseille is a big town!

Very easy to use and very friendly and helpful staff at the Tourist Info office. Thank you!

There wasn't enough time to make good use of the opportunities presented by the pass. Most of our time was spent having a wonderful lunch at the Old Port, and buying various soaps, for which Marseille is famous. We wanted to see the Roman docks museum, but did not succeed in finding it! A two -or-three day pass for an extended stay in Marseille would be used more.

Didn't get on as bus was full at one stop and blew by us empty at another stop we went to to try and get on. We were frustrated and never did use it.
Shelley

Probably not good value when cruise ship shuttle from distant cruise ship terminal ran only 8.30-3.45. By the time we had located and visited tourist office near Vieux Port there were chaotic and lengthy queues for the 10.30 boat to Chateau D'If, the voucher had to be exchanged after one long queue for a boat ticket, then we just squeezed on the 11.05 boat. There was then no time to go ashore at the chateau and guarantee an early enough return boat to allow time to do anything else! So just did the 1 hour round trip without getting off the boat, then similarly did the little train trip up to the cathedral, again without getting off. This just allowed time for lunch by the Vieux port. Would have been cheaper just to buy the boat and little train tickets at normal rates. This ticket I would only recommend to those staying at least 9-5 pm in Marseille city itself.