Christian gave us a great reception, he provided milk; juice ;tea; coffee [3 different was to make coffee - none of them instant!], and a traditional Viennese cake for our arrival.
He also told us a little of the history of Vienna and his family. He has a good sense of humour, and is obviously proud of his country; his heritage and his home.
Christian also suggested that we visit a local, authentic Viennese restaurant [2 - 3 minutes walk] We took his advice and were very happy that we did. It was not somewhere we would normally choose, but it was worth it!
He also gave us good advice on how to move around Vienna and where to go with relation to our requests.
The water in Vienna is very nice to drink.