Translation of mountainous in German

We sat on the balcony and saw that the hotel had even a pool on the roof top but I did not have the courage to jump in. It just looked to dirty and as no one was in there I did not need to be the first.
I wish you a good trip, when you come to Germany in June! How do you long stay in Berlin? Please help me with my English, in return I will help you with your German. Wish you a nice day!
The same afternoon (October 4) we took a flight to Arequipa, spearing a bus ride of 12 hours. Due to heavy winds we had a delay of 2 hours. We took off at around 4.30pm.