We were more than satisfied with Dmytro's apartment. There were 3 of us and the apartment was extremely spacious, very clean and you could reach all major hotspots easily and quickly by public transport.
Also the communication with Dmytro was excellent. He was always immediately available and friendly and always helped us directly with any problems.
We really enjoyed our time in Vienna and would always choose one of Dmytro's apartments again for a repeat stay.