The Celebrity Millennium was "Solticisized" back in 2012. In the overhaul, Deck 11, Aqua Class was added. We have sailed aboard the Solstice, so we weren't expecting too much. But this sailing was the worst cruise experience we've had. I knew not to book Celebrity because of our first experience with them, but the itinerary looked too good to pass up. The cruise was a transpacific sailing from Tokyo (Yokohama) to Vancouver, BC.
The overhaul of the vessel seemed to not have been given much thought or planning. Our stateroom was an Aqua Class stateroom on deck 11, #1101. The stateroom's cooling and heating system seemed like it was the exhaust for the galley. The room constantly smelled of food/garlic and our clothes came out smelling of food. One of the selling points of an Aqua Class room is the aromatherapy; we could not even smell a hint of our aroma diffusers. Not relaxing at all.
When we checked in, we found that our air conditioning was not cooling. I reported it to the staff. Four days later, the room was still not cool enough during the day. However, since we were sailing into cooler climates, it really didn't matter at this point. We simply kept the slider open whenever we were in the room.
The kitchen vented into the stateroom's heating and cooling system. All day, everyday, we smelled food and garlic. Our clothes smelled of food. The stateroom is also smaller than the average Aqua Class room. There was a smaller sofa instead of the larger, leather Aqua Class sofa. On our previous Celebrity cruise, we received an upgraded tote bag. When I asked Guest Relations for the tote bag on this cruise, she told us Aqua Class no longer gets the tote, only Concierge Class (but Concierge Class fares are lower...go figure!). Also Concierge Class gets a separate check in lounge (again, they pay a lower fare!)