This hotel is located on the 6th floor of an office building. There are three types of rooms: no window, tiny with a window, and big with a window. I have chosen the cheap one without a window, hoping it will be quiet. On the contrary, it isn't subtle. An unknown disturbing sound is coming from outside (a massive aircon system or something). I tried to change the room the next day. The small room with a window was even smaller with a tiny bathroom and smelled strongly of cigarettes. The bigger room with a window is twice as big, but no noise insulation exists. You can hear people talking in the next room, and the smell of cigarettes and instant noodles enters the room through the ventilation system. The shower cabin has mold, and the overall quality of construction is poor.