We took this cruise for the itinerary and also to try out Silversea. We had previously cruised on Seabourn and were curious to see how the lines compared. Our itinerary was wonderful - no at sea days and a new Mediterranean port each day. The ship itself was nice but in need of a refresh - you could see certain areas were showing their age. Some of the public rooms need to be re-thought because they really don't fill the need. For example, the library was very small (6 seats) and always full.
Our cabin was pleasant but the soundproofing between us and our neighbor was insufficient. The food was excellent and we decided that the reservation-only dining options were not as good as the regular dining room. One nice feature was the availability of "health conscious" dining options at each meal whereby you could select something delicious and still be aware of the calories you were consuming. Service was adequate but not up to the experience we had on Seabourn where the staff seemed more genuinely interested and everyone knew our names after the second day.
Overall, we would have to rate this as a notch below Seabourn. It is also worth noting that several Silversea regulars we encountered observed that they thought the Silversea experience had declined, possibly due to cost cutting efforts.