A convenient airport, I like that everything is logical, clear, and easy to find. Everything is always clean and tidy. It is very convenient that you can go down and take the train directly to the center of Cologne (Hauptbahnhof) without leaving the airport building. I can't count how many times I've been to this airport in my whole life, everything is clear and understandable)
Great airport. On the 0 floor, you can apply for free taxes and receive refundable VAT. The logistics are well thought out. There are enough empty seats in the departure hall.