We have done a couple of transatlantic cruises recently, one on Celebrity and the other on RCCL. We decided to do another one since it is a relaxing way to come back from Europe. We have done a fair number of cruises, mostly on RCCL, Celebrity, and NCL.
Overall the trip was very nice with nice weather...very consistent with previous transatlantic cruises. The Liberty is a very nice ship and a good choice for a transatlantic. We had a balcony cabin on the hump on deck 7 (7644) and it was perfect for the two of us. The balcony was a nice size, no noise problems and well located to get to most places on the ship. I would avoid cabins at either end since it is a very long walk from one end to the other!
The pros:
Nice cabin. Good location, quiet. Cabin is on the hump but standard size....balcony was a bit larger.