Very good hotel for staying for few nights in Berlin. It was clean and quite comfortable. The room is pretty basic, it would be nice to have a kettle at least one on the floor.
There were not a lot of people, so showers and toilets were always available. There is no elevator, so if you stay on the 4th or 5th floor, be prepared :)
The location is near the center, but you will have to walk about 2km to Alexander Platz, but it is because the city is huge itself.
Overall, good experience, can recommend!