It seems the walls of the room are made of plywood, I apologize. Noise from everywhere came into the room. There was also a group of bank ladies who were very noisy, as if it was their first time at the hotel. I reported it to the receptionist, but the noise was still there. It's a shame, because the staff service, cleanliness, and comfort of the room were all excellent, but the walls weren't soundproof. Couldn't sleep all night, Sis, I apologize.