The room was in the basement. The room was very small, and quite noisy.I could hear everything on my head. I was below the reception and the breakfast room, so I could hear people walking and moving chairs from very early in the morning.
I asked to change room, but they showed me an even smaller room, probably quiter because was in an adiacent building (few steps in the inner courtyard). Otherwise I had to pay 20 euros more for upgrading. A pair of earplugs did it.
For the rest the hotel was perfect, staff was kind, breakfast was good, location was perfect for where I needed to go to work, but it is also very central.