For the past two years I have looked forward to staying at the JW Marriott Changfeng. On previous visits the hotel felt like home away from home, but this last visit was disappointing. My understanding is that hotels in the Marriott family do not allow smoking, even in China. I loved that I could count on this hotel to be smoke-free, unlike most hotels in China. Our room was inundated with cigarette smoke for most of the night. It was as if someone was smoking in our room. I assume the smoke was coming in through the HVAC. It made both me and my fiancé sick. We had specifically requested a non-smoking room to be sure, but not non-smoking neighbors. The staff is wonderful, however. That hasn'the changed.