Upvote:1
Yes, it is airside at Gates B/D, Level 1:
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Location / opening times
You can find us at Gates B/D, Level 1. The Transit Hotel Reception is staffed 24 hours a day .
The boarding pass check and security check are open until 10.30 p.m., the passport check until 11 p.m. and as of 6 a.m. (Access possible only with a boarding card and only with hand luggage). No access to/from the Schengen area between 11 p.m. and 6 a.m. from/to the Transit Hotel.