My travel agent's advice for Carnival of "set your expectations low so you won't be disappointed" didn't work for the Conquest because I simply couldn't have set me expectations low enough!
Our kids really wanted to cruise during Christmas break, and our options were very limited by the school schedule. The Conquest had what seemed to be the best itinerary for our dates, so we took our chances. We previously cruised on the Carnival Freedom, a sister ship, in the Mediterranean, and that turned out to be a pleasant surprise. No such luck on the Conquest.
The cabins will make you think of a run-down Holiday Inn. The food quality resembles Denny's. Add to that management that couldn't operate a Dairy Queen, and you have the Conquest.
On the Conquest, you have a choice of 220 sqft in the cabin with no balcony, or if you want a balcony, they carve the space out of the 220 sqft box. Unless you really use the balcony, you'll enjoy the extra space in the cabin, especially with four passengers sharing the space. Being on Deck 1 midship was nice. Close to gangways, so no waiting for elevators or climbing stairs to get on/off the ship at ports, and close to the main lobby areas. No noise from above or below, but plenty from the hallway and some from the adjoining room (through connecting door).