I don't really know what to say. I don't like to give bad reviews. That happened maybe 3 times out of 80-90 stays.
I asked Eberhard if the flat has some constructions around because we are quite sensitive to noise... and he said no. We arrived and we had 2 constructions in the building + 2 outside. 8am wake up call with the sound of hammer and drilling is not cool. I told him and he replied that he couldn't know it. The hall of the building was full of cement bags and the stairs full of dust due to the renovation... And they couldn't know.
The location is an "alternative area" with not much around. The city center is approx 3 metro stops away which is okay.
The kitchen is great. Well, 60% of the flat is the kitchen so this is the highlight. The living room is non-existent. The rooms are tiny tiny and the beds are the tiniest bed for 2 I have stayed in.
So, personally I wouldn't stay there again.