We sailed on the MSC Poesia last year, booked their best cabin on deck 15, it was advertised as a suite. This cabin was no larger than a veranda cabin that other cruise lines offer at a lesser price. Granted deck 15 has a marvelous view, quiet, easily accessible to the elevators, the showroom, Zebra lounge, and the lido (pool & buffet) deck. But the cabin is not a suite, they offer no additional amenities like you would expect in their best top of the line cabin.
Beautiful ship, the layout is fantastic, but they need to do a minor rehab on deck 15, and create a MSC Yacht Club area, in order to justify the extra cost for the cabins.