There was some kind of smell of either smoke or chemicals in several of the non-smoking rooms, it didn't help that we changed rooms while it seemed to come from the ventilation system. It made our stay much less pleasant than it could have been as we had to keep the windows open at all times. The only area where the air was fresh was the back of the breakfast room, which - it turned out later - had a separate ventilation system. The staff were very friendly and service-minded, although they could not solve the ventilation problem. Until the hotel solve this problem, I cannot recommend it unfortunately..