We had a wonderful stay at Chiao-Hua's place. She seems to be very nice though we could not meet her in person. However she called us to check if everything was going well and was also available over call. The place is situated in the center - just about 7 minute leisurely walk to Rathaus where the Christmas markets were. Besides it is well connected by trams and buses. I discovered there were multiple ways to get to her place from the airport and I chose to come by the S7 and the tram 5. Her place is very clean and well furnished and she was very responsive to my emails on queries as well. Would definitely return!