The hotel was in a excellent location, being in a very vibrant area with easy access to public transit to access the rest of Hamburg. The room was very clean and well maintained. The staff was very attentive and someone was at the desk 24/7. I did not experience any of the noise complaints that any of the other users mentioned, but I was on the third floor.
My only complaint was that the stairs were very narrow and winding. Not much that they can do about this, but it did make it more difficult when carrying baggage.