I spent one month in this appartment in march. The appartment really looks like the pictures. It's cosy, elegant, and located in a very quiet district (but you have a Billa shopping center at 200 m2 and the tram 71 which is very convenient). The Belvedere museum with some beautiful Klimt, Schiele, and so on, is also next to the appartment, which is great.
Yes, it is true that there are some scaffolding outside but it doen't hide the outside light.
The common aera of the building are in true viennese style - the stairwell looks a bit like in Freud's house (that you can visit in Vienna). I found this detail totally charming and inspiring.
The bathroom is tiny but with a very nice and brand new shower.
It's definitely a great place, that I really recommend if you want to experience Vienna not as a simple tourist but as a viennese.