Initially we were put in a smokers room which was our own fault because we forgot to specify when booking, the staff were kind enough to move us to another nonsmoking room though, without charge. Unfortunately, the smell in the new room was barely any better. Apart from the smell, the general cleanliness was fine.
The hotel isn't in the best location if you want attractions that are within walking distance, but it is only a 1-min walk from the closest subway station.