I will start with negatives:
The apartment is not quite . There is a sound of restaurant ventilation coming from outside, which awoken up us very early in the morning. Sound insulation of the apartment is not good.
The apartment is also dark, barely takes sunlight during anytime of day as its only window is facing a narrow square area surrounded by walls of the building.
Positives:
The apartment was clean, well equipped and comfortable. The host, Andreas, was nice and responsive. He also let us for early check in which I appreciate it.