![PO Britannia Retreat The contemporary Retreat on-board PO Cruises's Britannia cruise ship](https://www.cruise118.com/advice/wp-content/uploads/2018/03/po-britannia-sanctuary.jpg)
![PO Britannia Retreat The contemporary Retreat on-board PO Cruises's Britannia cruise ship](https://www.cruise118.com/advice/wp-content/uploads/2018/03/po-britannia-sanctuary.jpg)
It’s fair to say I really appreciated how lucky I was, having the chance to see not one but three of the newest and biggest cruise ships in the world – namely Royal Princess, Anthem of the Seas and Britannia – in a truly ship-packed (and it has to be said, food-packed) three days. Of…