This is a coveted corner aft stateroom. It has a lovely huge balcony with two chairs, two lounger style chairs and a coffee table. The aft railing slightly wraps around the corner giving you further side views. Absolutely no one can see into your balcony except perhaps your neighbour to the right if they really, really tried. The privacy is wonderful. Otherwise the room is identical to all balcony staterooms.
The down side is that you definately feel more motion from this location. We have also stayed in C753 (identical but on Caribe) and said we'd never take an aft stateroom again for this reason but memories of the privacy won out and we booked B749 this time.
However, we had a very smooth sailing and have to admit that we were both queezy often in this stateroom. We have never experienced this in any other location.