We have taken at least 50 cruises on many different ships and were always happy with our choice. We went on the Crown Princess on Mach 25 with a group of 17 friends.
Upon arrival in our cabin (B605) we noticed a terrible banging coming from the hallway, We immediately went to the passenger service desk and were told there were no available cabins and they would try to look into the problem, Two sleepless nights later (earplugs and two pillows over my head did not diminish to banging enough to sleep) my husband said we were getting off as soon as we arrived in Antigua and flying home. The noise was that bad!
Luckily for us, although not for someone else, someone was taken off the ship in an ambulance in Antigua and I again ran to the passenger services and we got that cabin (C616). That was very quiet, but whenever we passed cabin 606 we heard the same banging and were very sorry for those unfortunate guests. That meant the banging was on two decks and on both sides of the ship! This lasted for the entire 8 days of the cruise.
As stated above terrible noise. However cabin C616 was fine