This Hotel XYM near COEX, Samsung Subway Station is not ready to accept customers. I stayed at this hotel for 1 night on February 1, 2018, in Room 408. As usual, the temperature outside was around -10 degrees Celsius, which is normal for Seoul during this time of the year. The room was frigid. The floor was cold. I thought I was going to freeze to death during my sleep. I was so cold, I woke up around 4 am and gathered up the extra blanket in the room and put it on top of the exiting blanket on my bed. I also wore additional clothing and hugged one of the extra pillows while I endured the cold until next morning. When I woke up, I quickly went to the bathroom and turned on the hot water to get a hot bath to thaw my cold body. The hotel’s heating is controlled centrally by the front desk so you have to call the front desk for the control. I complained twice to them about the cold room but nothing happened. I complained again while I checked out and after I checked out. They dismissed the problem as the room’s air temperature was only cold but there should not have been any problems with the heating, without even checking the matter. Bad hotel, bad customer service. I do not recommend anyone staying at this hotel, especially in the winter!