Matheus was a great guide and we feel so fortunate to have him during our trip He encouraged and incentivized everyone to be on time, in a respectful way, and to my surprise everyone was despite the big group. His English skills were good and we had no problem understanding him.
All the Tour guides were good except for one lady guidewho accompanied us to venice and Florence. She was rude and inconsiderate and not passionate enough in her profession.
As the customer are from different countries it will be better to provide some basic amenities like kettle in hotel rooms.