The Pride uses the Azapod system and the motors are contained entirely in those pods that are located about two thirds of the way back of the ship. If you feel any vibrations it would be because of the harmonics of the props displacing the water under the ship as well as the flow of water around the ship and not the engines. If anything this 'vibrations' are soothing like white noise and more relaxing than anything else.
We could feel a slight vibration in the rear on deck 6 also but it didn't bother us in the least. We were in #6258 which is the last cabin on the port side. The worst vibration was in the Normandie dining room all the way forward but we only noticed it on one night when the swells were pretty big. The dishes rattled like you wouldn't believe.
We had a rear balcony cabin on the Spirit last year...there was a lot of noise and vibration...would not book back there again....(should also add that on the day that it was the absolute worst there were 30 mph winds and the seas were pretty rough)...but, no soot on the balcony. But even on the days without strong winds and rough seas you can feel and hear the noise/vibration...
Re: Re: Engine vibration on the rear of the Pride?
I had cabin 6333 on the Pride and had no problems with vibrations or soot. I would book a cabin on the rear of the ship every time! I do remember more vibration in the dining room but it was never an issue.