Alberto's apartment is so close to everything it is ridiculously handy. Book your visit to the Duomo early if you intend to climb the 476 steps, the view inside and outside is amazing. Places to try are the central market food hall area, great vibe, trattoria Za Za in the market square, the open air market in the square at the end of via dei servi, the streets between the Duomo and the river are great to explore, and book some guided talks......so much to see and hear about you need a guide.....