What can I say … just do it!
I was visiting Treviso recently with five friends, and we booked a prosecco tour with Visit Prosecco. Cris was our driver and he was great; friendly, informative, and fun. And his English was excellent (which was important for us as none of us could speak Italian).
We all really enjoyed the tour and would be happy to recommend it to any other wine lovers visiting the region.