The apartment is really comfortable, nicely decorated and includes everything you need. It was one of the best I have rented with AirBnB. It's also perfectly cleaned.
Josef and his colleagues were all very welcoming, easy to contact and always making sure we enjoyed our stay. They texted us on a daily basis, just to check if everything was going well. We had a late flight on our last day, and were able to leave our luggages in their storage unit during the day so we could enjoy our last day visiting the city.
The only thing that I would mention is that it was quite noisy at night. The street below is a busy one with tourists. It was crowded most of the time, especially during the weekend. Unfortunately, on Friday and Saturday night there were some drunk people in the street just below our window, from 2-4 am, yelling and shouting. We bought earplugs at a pharmacy for our other nights and slept very well. Its really the only thing to mention, but I have to admit we went in a busy time (Christmas markets had just started).
I would recommend this flat to my friends.