I had another flat reserved closer to the marina area and ferris wheel but that owner cancels on me at the last minute so I was scrambling to find something comparable. This is a very spacious and comfortable two bedroom apartment on the top floor. The owner Michele met us at the train station and brought us to the flat. She was super nice.
It may not seem like a great area at first but venture out and get your bearings of the surrounding area. It is away from the old town but just a short walk away and minutes from a large shopping center with good food options and Monoply? food market. Ordered food from Pan-Asia everyday, recommend the Singapore noodles. You won't need a maps app to find the old town area, just follow the tram tracks all the way down. It is a better (longer) route but can avoid most of the Muslim ghetto.
Would stay again if in Marseille.
Great air flow. No AC but not needed here.
Toys for the kids to play with.
Very secure access to building.
Not in the old town area if that is important to you.