It was a cool experience, we got to visit a lot of institutes. We were able to interact with students enrolled at RWTH directly, and the professors were really nice, I was even able to make small talk with Prof. Dr.-Ing. Fritz Klocke when I met him on campus after his class.
Courses were packed so it was a bit hard to understand all in such a short time, but we managed with the help of each other, our buddies and the staff.
Other than the classes, what I like best was the cooking day at our buddies house, my friend and I enjoyed it so much we invited our buddies to come over for another cooking day at the boarding house.
All in all a nice experience to all who want to experience Aachen and learn from a great school.