Very quick and very nice contacts with Wolfgang and his daughter Theresa, who are very flexible (my plane came with a delay).
The apartment is just as shown on the pictures and it is very clean and very well equipped, particularly if you want to cook. It was just rather bright in the morning because of the white curtains.
It is also very well situated : bus around the corner, tram and undergroung nearby, lots of shops and restaurants in the neigbourhood thanks to the Landstrasse Hauptstrasse around the corner. And yet, it's very quiet (good windows, quiet neighbours).