The place was exactly what we expected and exactly what we needed during our stay in Vienna. Very centrally located you can be at Vienna's main shopping street Mariahilfer Strasse in just 3 min walking distance, have supermarkets nearby at the Westbahnhof train station that are also open on Sunday (a rarety for Vienna) and are very well connected to public transport with 2 subway lines in 1 min distance.
The apartment is small, but charming (we especially liked the "sleeping level" you reach via stairs) and equipped with everything you need for a comfortable stay.
Since the apartment is facing a courtyard, it is extremely quiet despite its central location (something that is very important to me as I have a very light sleep).
Will book again next time we are in Vienna!