Do not book the economic room - it looks nothing like the photos. It is pretty much a storage room with no windows, and the bathroom is just one room - you shower right next to the toilet. It was clean though, we got towels every day and they cleaned the toilet.
The mattress though is rock hard - you can feel the feathers - and the blanket was nasty. So no good nights sleep. Also, the room is right next to the breakfast room - it was really loud starting around 7 am.
When we asked for another room (the other rooms looked really nice, with a balcony - like the photos) they laughed at us and said it would be an extra 50€ a night - which would double the rate.
The location is great, it's a short walk to the center. Everything else was great! If you go just make sure you book a regular room or know that the economic room is just a really bad idea and you won't have any comfort. I would compare it to a hostel room. Might be good for backpackers!