We chose this cruise for the ports and for the fact that we would embark and disembark in Barcelona (one of our favourite cities).
We had a few glitches on the first day but after that everything fell into place and the rest of the cruise was wonderful.
When we booked the only OV cabin available was 3174 and we were worried that it would be noisy but we had no problems throughout the cruise.
Ocean View Deck 3 and adjacent to the Passport Bar.. no issues.
Took bus ( independently) to Mdina - lovely and most enjoyable day
Took the train to Pisa independently - a wonderful day.
Have visited before - just walked around and enjoyed the town
Walked into Naples then took the funicular to Vomero. Enjoyed a pizza. Lovely day
Toured independently - cable car and walking around the town. Overnight was lovely as had time to enjoy once all the gropus had left.