Where is Anja when she decides she wants to be an actress in the book, Leading Men?

Anja travels with Frank and Tenn from Portofino to Rome to stay with them in their apartment on Via Firenze. After purchasing appropriate clothing for Anja to wear in front of their film connections, they take her to the Senso film set. Anja is immediately enthralled by Alida Valli’s performance, and becomes certain that she wants to be an actress.