Translation of pitiless 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.
We cursed our bus driver and tour guide and everybody knew that these people were not professional. After 2 hours we arrived at the destination. It was a little boat station on a riverbank.
Sorry that I did not write earlier. I have got a lot of work in my office. I did not forget and always think about writing you. What exactly do you study? Do you have children? Are you married?