Queen Mary 2 is an elegant ship, very long, and built as an ocean liner to cross the Atlantic.
We had a smooth couple of days, but on day 3rd day, it started getting rough. To me anyway as we had 4 metre waves.I had to take some tablets for the nausea and was fine afterwards. Roughest crossing all season apparently, and was told it would have been worse on any other ship!
The QM2 has a very elegant and sedate feel to it. It feels very spacious, never ever crowded (except on disembarkation) and the staff are very polite but never cross over to be friendly. We have cruised with other lines before and find this to be a bit too "distant" for us. We don't have the exuberance of the crew, not even of the cruise director, the orchestra etc. They don't look like they are having fun!
Cabin was large as it didn't have a balcony. We were in 4007 port side in the front of the ship. Near stairway A, quiet corridor generally, and not far from the laundrette. Large shower, plenty of storage in cupboards and drawers. Small tv. No tea making facilities (we brought our own kettle). Has both American and UK sockets.