Overall, the apratment is very good. Perfect location with many good restaurants around. Only 5 minute-walk to Stephan Church. I did not meet Nikola but his cleaning lady's husband waited for me and gave me the key. The gentleman cannot speak English so did not provide with any important information. But Nikola is very well connected. He helped solve many problems. Besides, I know Nikola has added one fan in the room, but maybe two fans will be better for both bedrooms. Vienna is extremely hot this year :)