Awesome! You are very fortunate to enjoy the visual grandeur of the city of Rome on a daily basis.
When I started viewing, I expected Rome traffic to be the biggest obstacle, but it appears the pedestrians and tourists are the biggest challenge. Also, you ride over some pretty rough terrain. Big Apple tires, and thudbuster seat post suspension would maybe help to soften your ride, and a good bell. I think a bell, however, would not work very well. You would be riding with one hand on the bar and one hand on the bell all the time. Try clipping a baseball playing card to the front fork so it rubs against the spokes. I use a Mickey Mantle rookie card
>.