This was our 11th cruise with Princess and the first on the latest largest ships.
First the positives (mostly compared to the earlier Grand, Island and Caribbean etc. classes):
The cabins were about the same size but the bathroom was a bit larger and better arranged.
Well arranged. Good closet space. Good bathroom design (better than prior class ships except for Island and Coral - which are also better than other ships). Smallish balcony (we always got the big balcony on the older ships - that doesn't exist on the new ones). Great new on-demand movies on the new wall mounted HD TVs. AC control seems to be improved. Otherwise about the same as the older ships - similar good bed, plenty of dresser drawer space, etc.