Despite asking for a non-smoking room and actually living on a non-smoking floor, smell of cigarette smoke was terrible in the room, especially in the bathroom. It was true in both the original room we were assigned and another one (on a different floor) that we got when we asked for a change of a room. Apparently, the smell is coming from the ventilation, so there is no safe place.
The room itself was small and old, even after the vip upgrade.
The staff was attentive in attempting to accommodate us by changing rooms, but it did not help.