My room's door did not have a seal at the bottom, so some light crept under the door (not typically an issue, since I use an eye-mask to keep light down), but this made any noise in the hallway noticeable, especially late at night. For instance, despite being three rooms away from it, I could hear when the ice machine was being used, and when housekeeping began to work in the hall in the morning, I could hear them quite clearly.