I'm staying in this hotel for more than 5 years every month 1-2 times. The quality is gradually falling down. The rooms smell mould, people smoking stinky cigarettes in the rooms and corridors, breakfast and dinner buffet are really poor (except for the pastry, the bread is always fresh an of a high quality). Carpets in the rooms are not really clean. This time I had a big spot on the carpet (maybe red wine, maybe something else). The hotel now cannot be classified as a 5-stat hotel me for the next trips I'm switching to Westin.