From Piazza della Rotonda, the square of the Pantheon and, having the monument at your back, head to the left and take Via Giustiniani. Walk along the street and continue onto Via del Salvatore. In a while, you’ll see the church on your right after walking about 200 meters. There is no admission fee to enter and people are welcome to visit it within opening hours. Monday to Friday: 09:30 - 12:45 & 14:30- 18:30 Saturday: 09:30 - 12:15 & 14:30 - 18:30 Sunday: 11:30 -12:45 & 14:30 - 18:30