The tour had some advantages. I believe Silvio had wide knowledge and tried to activate us as a group. Unfortunatelly there were more disadvantages then pluses. although there were just 5 of us at some points I could hardly hear him. I can undrestand that talking to people at busy streets is quite a challlenge so Silvio should avoid turning his head towards spots he talks about. Pointing at them and facing people can at least parly help. Silvio also hesitate quite often as unsure of what to say next. It didn't make the whole tour very entertaining.