Translation of interest-free in German

We started the next day with the famous breakfast at our famous Rex hotel. The breakfast was not good at all and they tried to mimic an American continental breakfast, instead of using typical food.
There were too many of these children and they were determined to sell us a can of Coca Cola. All means were legitimate, even shaking our boat, so that we would be scared of falling into the water.
The view of the valley, the lakes and the surrounding volcano mountains were breathtaking. We stayed there for nearly one hour and had a little snack. From there we continued to have lunch.