Translation of backdoor in German

We agreed to stay in the room with no windows and unpacked our bags. We wanted to have dinner and went out to a Sushi restaurant a friend told us about. It was a great place with great atmosphere.
We really felt like being in a stupid tourist attraction. The environment was very beautiful but the mass of people would ruin our special moments. Anyway we had one more surprise on the way back.
A little information about me: I am 33 years old and my wife Anna and I have 3 children. We live near Dortmund. I work as a train driver in the Deutsche Bundesbahn. Do you know Germany?