We have been on 6 Carnival cruises in the past and this was by far the worst.
Departing Port Canaveral on 12th. May '12 on a 5 night Bahamas itinerary visiting Freeport, Nassau and Half Moon Cay.
Our cabin was good as has been in the past. It was clean and comfortable. Although there must have been a staff work area behind our cabin as loud noises came from the central ship area next to our cabin each night very early in the morning, i.e. 2 am, which woke me up. Our cabin boy was really good and probably the best we have ever had on Carnival.
M187 - Midship. no engine noise.
Inside cabin but next to a central crew area in which early each morning, i.e. 2 a.m. generates noise enough to wake you up. I think the area in question is probably were they bring up or prepare room service meals??? I heard doors banging and metal on metal noises.