Translation of flexitime in German

In the end we went up to the tower. We have never climbed so steep stairs ever before and once up we were really afraid to go down. There were no safety installation at this tower.
There are many lakes situated throughout the center. The entire atmosphere here was more relaxed. Our first spot was the Ho Chi Minh mausoleum. In addition there was a small Pagoda nearby.
All taxi drivers recommended that we stay in the hotel, watch TV, refrain from physical effort and drink Mate tea in order to get used to the altitude. We made the mistake and didn't listen to them