We really enjoyed the location of your accommodation and I think that the communication was good. The apartment was also very clean. But especially the arrival was not all pleasant, as we had to search together the sheets and pillows for the second bed/sleep sofa, even though four people were announced. Until moving out, we haven't received any pillow sheets. Furthermore, I couldn't shower the morning after arrival, because there were no towels in the flat. The kitchen could be a bit better equipped: essentials like salt, pepper and oil were missing, as well as kitchen towels.
But the actual problem, why we gave the flat only 3 stars, is that the flat smells really bad because of the drain, especially in the bathroom. As the flat only has windows to the inner yard, you also can't really get rid of the smell with fresh air.
However, as we didn't spent much time in the apartment anyway, it was a very good spot to discover the city from, as it had short ways to anywhere!