Overall the Reflection is a beautiful ship as are her sisters. Celebrity had taken feedback from the previous editions and tried to improve the design. There are some major and minor changes from the earlier versions of the S-Class ships and most for the better. While they added more rooms and therefore increased the capacity of the ship it did not feel any more crowded than previous S-Class ships. I suspect that on Caribbean runs when everyone is by the pool there may be some more issues, but on a Med cruise there was plenty of room in the buffet for lunch, the specialty dining rooms for dinner and the bars never felt over crowded.
THE GOOD:
The bar staff are super friendly across the ship and we had hours of fun at the Martini Bar watching them perform and at the Sunset bar wrapped in blankets as it was a November.
Cabin 1688 is a corner Sky Suite on deck 11. Lovely room with a side window and large balcony. Window washing equipment blocks the view from the balcony though so be aware that your perfect picture may be blocked by some equipment. Also, the neighbor's toilet vacuum system seems to be in your room so each time my neighbor flushed, it was loud. The room though is spacious and the bathroom large with a full bath tub and overhead rain shower head.