We travelled with our 3 kids (6 years old, 5 years old and a baby of 11 months). The place is newly renovated and exactly as in the pictures. Very clean and bright. There is a great access to the public transportation (tram 46) being right in front of the building. Also you can walk to Mariahilfer strasse, approx 15min walk though quiet streets. The appartment is on the second floor and for us traveling with a baby it was a challenge to carry the stroller up and down every day. The communication with Kai was exceptional. He provided very clear instructions how to access and enter the appartment.
The only unpleasant thing during our stay was the construction noise and dust. Half of the building was under construction and it was noisy from 7:30am at some days. There was construction material and workers during the day. Overall a great and cozy place- near the centar and very well connected to the public transport.