Here's a few of comments on our experience on the Costa Magica:
We had a balcony cabin in the middle of the ship right off the elevator. Amazingly enough it wasn't noisy despite the high traffic area. The cabin was larger and more spacious than we had on both NCL and Princess.
As stated by others who have been on the Magica, it took the whole cruise to figure out how to navigate the ship. I highly recommend that you get yourself one of the larger maps of the ship that the information desk and learn how to find your way around. One of the cruise critic members posted a very good explanation on how the cabins were numbered and the decks broken up. The most important lesson he gave was to look at the picture of the ship located at each elevator. It will indicate where you are and what direction the ship is pointed. When you get off the elevator look to see which direction you need to go so you won't get too frustrated trying to find your way to dinner.
large bathroom with good size sink and shower with curtain, double closets, good hangers, fairly comfortable bed. Cabin crew eager to please. Ice buckets filled daily, newspaper daily. door to balcony opens instead of slides which limits your ability to keep open to hear ocean. We used rug to prop it open. balcony had table and two chairs slightly larger than that on NCL. no shampoo or bath products just a little bar of soap. there were extra blankets in the room if needed as well as two pillows each.