We are considering one of these cabins on the Summit because of the space and wondered about the noise/vibration of the engines. Thanks.
Although I've had many aft cabins, on Celebrity and other lines, I've never felt any big differences in vibration or noise. However, in the case of the Summit, it uses azipod propulsion units which means there are no shafts and screws on the aft. Azipod ships are very smooth. Summit also has gas turbines and not diesels for providing the electrical power. Gas turbines are also smooth running.