Italy Solo Trip

Hi, I am doing this trip alone next month and wondered if anyone had any experience or advice regarding it? It goes a little like this.

Milan - 2 nights (Como day trip) Venice - 2 nights Bologna - 1 Night Florence - 2 Nights (Pisa day trip) Rome - 2 nights (Vatican City day trip) Naples - 2 nights (Pompeii day trip)

Any advice ?