Our cabin on Sun Princess had 4 bunk beds, 3 of which magically vanished into ceiling & wall cavities, leaving the 4th bunk to be converted into a sofa/lounge during the day. This gave us so much space - it was wonderful. I'd highly recommend this to families with older children.
Small balcony, but satisfactory & private. Lots of cupboard space. We were on deck 12, which was quiet.