I decided to check out prematurely due to various inconveniences.
The room had a strong cigarette smell which was causing me headaches and made it difficult to sleep. I tried airing the room for a few days, but it did not have any effect.
The bathroom was not clean. When trying to take a shower, the water was ice-cold and could not be adjusted.
The room looks different one from the first picture. The picture shows a large spacious room with a view onto the sport club. However, the actual room is very small and looking out of the window, one merely faces other buildings.
Besides these negative points, the location is good. There are many shops and restaurants in the vicinity. The flat is easy to reach by bus.