The apartment is spacious, well decorated, and well equipped. The place is located on the last floor in a very nice renovated old building. During hot summer days it becomes hot inside, but there is a portable AC and a ventilator in the bedroom which help a lot.
Lukas is helpful and very responsive.
We only had a problem with the check-in, and had to wait for about an hour in front of the building, and had to contact Airbnb support. However, we understood later that it was due to the fact that Lukas' mobile phone was stolen the previous night.
It was also possible to leave our luggage in the apartment after check-out, and thus had more time to spend in the city before catching the train to our next destination.
Overall, Lukas' place is very nice, and we would recommend it.