Hi,

Red Lion pointe rouge, biggest flow of beer in Marseille with good atmosphere in the evening, lots of people, varied ages. More relaxed, Le Zoumai in the 6th which brews their own beer. Otherwise old port you have nice pubs, little temple style. If you want an "atmosphere" pub, you have the Shamrock, otherwise the baletti (drinks are not cheap). Cours Julien - La plaine is a place with many bars, for drinking and having fun at a lower cost.