By far my worst experience at a 4 star hotel. The first room had a strong bad smell (probably water damaged), why we asked to change room. In the second room, the air condition did not work, making it impossible to sleep due to the intense heat. After asking to change room once again, the receptionist ironically asked us to come back the next morning in order to change room. Finally, we were changed to a room where the air condition worked and there was no bad smell. However, the room seemed to be a single room (although we had booked a double room), and old and very worn out - including obvious signs of water damages on the bathroom door. I will not stay here again.