We had a cabin near the rear and I felt the vibrations. Did not bother my wife. We had dinner with the chief engineer and he said Radisson is trying to figure out what to do about it. They hit something a long time ago and a company said they could fix it so they dry docked and gave them the chance. No improvement. So they dry docked again and did more stuff. Fluid dynamics is not well enough understood for them to model what to do to the prop.

I think it comes down to bothering some people more than others, which means you won't know what you think until your there. Most of the time it is just noticable, but if the seas are just right its very noticable. Again, my wife never noticed.