We were in a platinum suite for our 7 night Adriatic cruise. Our butler and cabin steward were fantastic. They didn't fix our problems but they were honestly trying (more than I can say about anyone else on the ship.) Celebrity is TERRIBLE. We called them the first night to tell them we had no hot water. 4 days later, they finally fixed it. The only problem was we ONLY had hot water. It was scalding. Another day before they fixed that issue for about 2 hours. This was the same day the toilet stopped flushing. The water issue was never properly fixed. No hot water. Only hot water. Back to no hot water.
We asked for help taking our bags down for our early departure out of Istanbul and we told that wouldn't be possible. General disembarkment started 2 hours after our departure. They were not busy, they were just lazy. I washed my hair in the bathroom sink in the mornings because the water temp was too cold for a full shower.
Our platinum level suite and we couldn't even use the shower and on occasion, the toilet. No porter. No excuse for such service.
Guest Services offered a $350 credit towards our next cruise but I really don't think so.
The food was average at best. Suites offer nothing special except a butler that really serves no purpose. (poor guy) Room-service is dull and tasteless. There is an extremely limited menu. Our extra large balcony had some sort of ladder parked blocking part of the view. On board, everything was extra and it was very nickle and dime with things other cruise lines consider standard service. Coffee? Extra. Gelato? Extra.
Employees were either fantastic or openly rude. Nothing in-between. We saw many a furious guest telling a rude employee off. The response was apathetic and dismissive.
While their ships are clean and the ports are charming, I can not give one reason why you would chose Celebrity over Regents or Princess. They are drastically inferior with their service, the food, their plumbing and their appreciation towards their customers.