There is a floor plan with exact measures on the website, not often the case on airbnb actually, so if you can read, then you can see the exact size of the apartment.
You had very detailed descriptions of how to get to the apartment, it does however need understanding of east and west. Nobody else has ever had difficulty in finding the apartment.
The windows are not dirty, the bottom part of thermal glass in the bedroom is punctuated, being on the top floor the whole building has to agree to changing of windows as scaffolding has to be put up.
The apartment is clean, but it is not brand new.