Not really a secret tip. Most of the times we just use the airport hotel. We also have been at pension Köhlerhof in Ahden once, and to some places further away. I saw your trip report to Zell am Zee at another forum, and sent you a PM from here. I guess you haven't seen it. Good you had a nice trip after all!

Thanks! No - PM didn't come through!

Daher die Frage, die Flughäfen sind mittlerweise sehr kreativ dabei, Gebühren zu verstecken.

Ja, das stimmt schon!