Berlin's freshmen are sitting with the Vienna sophomores; they all share a slot allotment with Munich, whose current cohort is juniors and will be sending in freshmen next year. The upperclassmen have a nicer table, of course, but it's not the worst - buddying up is good for this, like the reading room they also share. Lysander is mostly chatting up Vienna's maintenance kid, angling to trade labor for tips and tricks, but since he's the low man on this particular totem pole he's also putting a lot of attention into scanning the room continuously. He is doing this mostly with his ears, which are better than his eyes, but you gotta do both, really.
There's space at the table for more, even after Vienna has invited in a few of their indie friends. They want the freshman to theoretically have space to make friends.