We went on this cruise to celebrate our friend BIG birthday, so it was chosen for us. My husband and I stayed in the mini-suite that was slightly larger than the regular balcony and in my opinion was worth the small difference. As part of promotion we choose the UBP that worked well.
In terms of the tours, we didn't book a cruise tours once. Instead we either book private tours (6-8 people) directly or went on our own (port of Livorno: took train to Pisa and Lucca).
To explain the 3 star rating here are the positive and negatives of the cruise.