The location is super great -- literally next to the central station, red light district and Chinatown. Also, dam square and the palace are in a walkable distance.
The single room isn't super big but it contains everything you need, and it's clean. Nothing to complain about.
The staff is supercalifragilisticexpialidocious! They're helpful, hospitable and polite. The reception runs 24 hours. One of them speaks a little Chinese ,which surprised me a lot! The bar at the reception also offers great beers.
A potential downside is that you'll hear the sound from the street until around 10pm. Well, it's in the centrum so there are some bars. I heard them singing ‘Don't Look Back in Anger’ at both nights. I don't mind but it might not be suitable for you if you sleep super early. (or hate Oasis)