About the numbering in the university - the building has three section.
One that is right next to the bus stop - there the rooms are 200+
The second is the middle one with the giant front doors that are rarely open - rooms 100-200
And the third which is closer to the subway construction site with rooms 1-100
And once you get used to the building, it's not a maze, but quite well organized, actually.

And do find some baba to make you baklava if you haven't tried that so far. it's sweet heaven on a plate...