A mushroom cloud of animal urine smell engulfed us as soon as we opened the door. We blasted the room with AC opened all the windows thinking that the smell will go away but it never did. Eventually all our clothes soaked up the smell and we stank ourselves! Calling/visiting the reception was of little use - staff on the night shift are not empowered to help and apparently no other room was available. We had no choice but to flee to the nearby Circus Circus. I believe mine is a rare case but I would never risk it again.