Modern built hotel, with excellent facilities and look. Staff very helpful. Rooms spacious and clean as was the rest of hotel. The beds are very comfortable, as were the pillows, my sheer joy at not being given a rock as a pillow, we both slept very well. When they say soundproofing the Onyx actually mean it! Amazing soundproofing we heard no one else in hotel and could not even hear the maids in morning which is normally always heard in other properties. The room service costs and bar cost are reasonable for the level of hotel, we were charged 30 euros on check-in for possible use though. We choose not to have the breakfast option as we thought it was overly expensive. The bathrooms are clean and well maintained with hairdryer supplied. For the few hours we were in the room the odd TV channel in language other than German would of been nice. Ideally located to St.Pauli station 5 minute walk to the gorgeous harbor area where there are lovely bars, restaurants, views, boat trips and other tourist activities/facilities. The staff is friendly and helpful. In the bar you can drink excellent cocktails. The overall decoration and feel is unusual and avant-garde. We had an absolute great stay as a couple - profiting from this romantic get-away and the hotel really contributed to this.