"It's a really comfy hotel, ideally situated for an early flight. The restaurant is good high end food, though you do pay for it; a burger set me back almost 40€, which apparently included an additional 3.50€ for a single slice of cheese on said burger and 3.50€ for a single slice of bacon (quite a disappointing slice of bacon, but otherwise the food was good...). The food other people around us had looked really high end. My wife had the club sandwich, which was also good. Cocktails looked promising though didn't have any...
My flight then ended up horribly delayed so I got to use the gym, which was pleasant enough; a rowing machine and a running machine would be good additions, and I think the suggestion that the gym had "Berlin city views" is a stretch, but whatever.
I'd certainly stay there again. I almost certainly will stay there again, though I'll ponder whether to do the restaurant again.
Staff very friendly and helpful. Bed comfy. Didn't have the breakfast sadly, as had to go to the airport before breakfast started. (Then returned to the hotel when the airport told us we could, due to delay.... when I went to the gym...)"