Highly recommend getting to Bolzano early so you have time to spend a day visiting the Italian Alps. The Dolomite Highway is awe-inspiring.
The bike trails were great. Mostly paved, and when they weren't, the majority were well packed. The tour route goes through picturesque countryside. The daily destinations are beautiful and historical.
The tour includes a 5+ hour ferry ride on Lake Garda. It is a gorgeous ride with the ferry zigzagging down the 35 mile length of the lake. Feels like you are in a National Geographic special. A couple of other recommended "must do's" - visit the Scrovegni Chapel in Padova and take in an opera at the Roman Arena in Verona.
Girolibero was our tour company. They provide great tour book of entire area and towns on route. However, they give it to you (along with bikes) the morning that the tour starts which allows little or no time to really utilize the great information. It would be much better if they provided a month earlier so you have time to research in advance. Should also provide bikes the prior evening so you can get up and leave earlier in the morning.
Some of the directions along the route could have been marked better. We followed other tour companies' markers more often because Girolibero's were fewer and far between. The bikes were excellent. In great shape and mechanically solid with smooth shifting.
We paid for the upgraded hotels. However, a few of them were in sketchy areas; like near train stations.
I don't mean to sound negative. Overall, it was a great trip and very glad we did it. Only offering suggestions to make the tour even better for future riders.