This is probably the most famous falafel joint in Paris. The whole street (Rue des Rosiers) is peppered with falafel joints.
Although table service is available, I think of falafel as casual street food, best to be had as a take-away and eaten on the street corner.
Not really a fan of eggplant, but had to give this most popular version a try. I really don't get the hype of this place. My falafel was perfectly ok, but no different from ones from any generic falafel food truck in New York City. I may come back simply because it makes a convenient snack/meal and this Jewish neighborhood is one of the few areas that are open on Sundays in Paris.
L'As du Falafel
34 Rue des Rosiers (4ème)