half a day was great. viator should allow an option to buy tickets for its tour participants as the hour of free time could be better used getting in the tower rather than roaming around the bldgs or the shops.
We loved Assisi!! Such a cute town that would otherwise would have been cumborsome to get to as tourists. More time in Assisi would have been nicer and slower walk through the town. More time in Orvieto would have been nice too. The Agrotourism lunch was not necessary and only took away time from the cities.