Very bad experience with reaching late night (@12.15) at the hotel. No one in reception, waited about an hour as searching near by hotels or to get any arrangements.
Trip.com agent also couldn’t get through hotel people, and advised to go another nearby hotel.
If you don’t have a German sim or no roaming, then either you have to stay at their reception corridor or find another hotel.
I suggest to remove this property from your site.
自動翻訳