I stayed in room 306, but upon entering, the room was overwhelmingly filled with the scent of deodorizer, making it extremely unpleasant. When I opened the window to ventilate, an unusually strong sewage smell emanated from the bathroom, quickly spreading throughout the room. Since it was a two-day stay, I informed the front desk the next day and they promptly changed my room. Subsequently, I had no issues. However, it's regrettable that the hotel seemed aware of the problem by saturating room 306 with deodorizer. The sewage smell was unbearable, reaching a point where I wanted a refund for my stay.