We were on the Eurodam in September in room v5095 right by the glass elevators. There was no noise from the elevators. Once in awhile I would see someone on the elevator, but you would really have to be looking to see anything. Whenever we rode those elevators, they went so fast, you were on and off quickly. I never saw anyone standing on their balcony. So, it would only be a brief instance if it ever happens. It was a great room, but there were only 2 people in it. Not sure if its suited for 4. However, deck 5 is great to be on.
We did have some rough seas for a few days in fact due to a storm. We had to skip Juneau and took the inside passage instead. So it was kind of a trade off, but that first day was very rough. Lots of sea sickness - even the crew members were feeling it. My husband stayed in the room since he was sick. But, I walked around during the rough part as being confined to the room made me feel it even more. With that said on the roughest day, I don't think there was any part of the ship that you wouldn't have felt it.
We loved the Eurodam! Enjoy your cruise.