It’s a basic accommodation right beside the train station. It’s not especially good or attractive, but it’s absolutely adequate. It is very clean, if a little tired, and I think it’s very secure with welcoming staff, and well run. As mentioned elsewhere the AC system is a real problem, but since it was October I could open the window - although that meant a lot of sound coming in from the train station. If you need a quick stop near the station, totally fine. If staying longer in Marseille, look further.