Our family of 4 - husband and wife in our 50s and DD in her 20s and DS late teens cruised on MSC Poesia from Copenhagen. We had been on one cruise before 3 years ago---Princess to Alaska.
Embarkation from Copenhagen was quick and smooth. Kiel was the main embarkation point for this cruise, so that may have helped the speed of getting on board and into our cabin. Our luggage was delivered promptly.
Our Superior Balcony cabin was very nice though not quite as big as the Mini-Suite on Princess (but also MUCH cheaper!). We had a pull out bunk and a single sofa bed. As is generally true, when the beds are out, it is difficult to get to the balcony. There was quite a bit of storage space, but 4 people in these rooms generally does get a bit crowded, but it was fine. We did have an issue with our mini-fridge (it did not come on), which took a couple of days to get resolved....but these things happen.