Although the building itself lies along a major road (cars, tramway,...), this particular apartment lies at the back: perfectly quiet, no traffic sounds! The apartment is small but cozy and very efficient (although you have to climb a little towards the bed - better not stay here if you have vertigo or unsteady at morning 😉).
We stayed here during winter (outside it was freezing), but inside everything was OK (we even had to lower the heating the first night...).
But the assets: it's just next to a tramway (only 2-3 stops towards Wien-Westbahnhof) and a bus stop. And Schloss Schönbrunn is even close enough to get there by foot!
The building looks old and worn out at the outside (and the elevator looks as if he'll stop any moment 😜) - but actually everything is very good maintained, and has a very particular charm! We hope to get back here one day!