We have sailed on Celebrity numerous times, the itinerary for this Cruise looked perfect for us, Greek islands predominantly at the right time of year.
To be fair, from the outside, the ship isnt as pretty as others to look at, the front end is designed differently, but obviously it doesnt affect your Cruise. Everything is new and pristine, as a new Ship should be. Not as open plan inside as other ships, a lot of walkway corridors without there being a huge atrium. The main activities inside were centered around the Cocktail Bar, a large space but could get very busy.
But saying that there are lots of positives:
Brilliant, large room, large bathroom, awesome balcony