This is a very nice apartment. It looks pretty new and it was very clean. If lived in Vienna I would want to live there.
It is only two rail stops from the historical section of Vienna so it was very convenient for site seeing.
The apartment has it's own heating. (Not central stream heating like you find most everywhere else in Austria. So you have control of the temperature. In fact, each room has a separate climate control.
There were some street sounds during the day. But I don't remember hearing anything after bedtime so it wasn't really a problem.