I had a room with a king size bed. It was very clean and comfortable. One thing that should be noted is that the rooms are quite small. Mine was perfect for one person, but if you're booking a king size bed for two people, just know that there's not a lot of space for both of your suitcases, clothes, etc. The staff were great, as they helped me combine separate reservations and were able to schedule an early morning taxi for me. So much appreciated!
The only glitch in my stay was at checkout, when their records showed that I ate breakfast there for 5 days of my stay (at 14 euros per day). I never once had the hotel's breakfast. Luckily, we were able to sort it out, but I would advise the hotel to work out a more reliable system for determining who is and who isn't having breakfast. Other than that, it was an enjoyable stay in a very central part of town, and I would stay there again.