The hotel staff are great, friendly and helpful. The problem is the air con ventilators. Even though this is a non-smoking hotel, smoke can still leak into rooms. I had to change my room the second day to a high floor as it became unbearable in my room with too much smoke sipping in. I told the hotel staff it is either other guests smoking in certain rooms or at the main air-con generator or vent at the stairways. The hotel should install better smoke detectors in rooms and corridors that will sound off to deter smokers.