Translation of daft in German

My name is Michael Jonsan and I am working with Swiss and German companies through the chamber of commerce, mainly in the bio and pharmaceutical markets. I hope that we can learn languages together.
The short story 'Hills like white elephants' is a short story about a relationship between a man and a young girl, based on having sexual encounters. The meaning of this story is not immediately recognizable.
He started to shout and to curse at my wife and me, but we did not give him additional money. I am convinced that he knew exactly that he did not take us to the original hotel but to a fake one.