I and my friend had a wonderful time in Vienna.
The apartment is clean and cosy and close to the stations.
Thanks to Peter's information, we could enjoyed the Summer Night Concert of Vienna Philharmonic which theme was "Wagner and Verdi" at Schonbrunn, a UNESCO World Heritage Site. It was an unforgettable memory for us!!
We will definetely recommend Katharina's apartment to
anyone who plan to visit Vienna.