Hi Betty, Do be aware of the pickpockets in Pisa. My brother was walking with my mom last summer and felt someone close behind. He turned around and there was a man, jacket over arm, with his hand in my mother's purse. My brother slapped the man's hand and said in a loud voice, "Get your d@mn hand out of my mother's purse." Too bad this continues. Just a FYI.
In Sorrento you can take the Radisson shuttle to a nice area of town with shops and the ever popular Manhole cover with webcam.