Studio cabin 12516, very near the studio lounge one floor up, can hear the toilet flush in the next cabin, but not too often. Can hear people passing by the door and can hear the passage door opening and closing. None of which was really bothersome at all. Other that the issue with a missing shower door replaced with a flimsy shower curtain, I would book this same cabin again. Hopefully the shower door will be installed when I next cruise on the Epic.