My son and his family were in 7014 on the Dream and thought that they felt a little more motion there than in prior cruises where their cabins were more mid-ship. It certainly was not enough to cause any distress though, so I wouldn't be concerned about that. But the laundry room directly across the hall created a lot of noise; people were loud in the hallways, the door slammed shut, and since the machines broke down a lot the techs were always coming and going to get them fixed.
I was a little further down the hallway (7068) and had no problems with either noise or motion.
Did it ruin their cruise? No, but it would not be their first choice in a cabin next time.