We stayed at Christian's for four nights and we were very pleased with the appatment. It is very clean and conveniently located in a very quiet area in 20 minutes from the center. In close proximity is a supermarket, cafes and restaurants, as well as the walking street with different shops and cafes.Christian gave us detailed instructions (starting with how to get from the airport to how spread out the sofa) so we did not have any poblems at all.
Also, it is very close to Vienner Stadthalle (only 5 minutes on foot) that was very convenient for us, since we were going to visit a concert taking place there.
So, I highly recommend this apartment from all points of view.
Next time we will deffinitely stay there again.
Thank you very much, Christian!