Hard to find but well worth it. The courtyard is simply lovely. There are so many great things about the church. My favorite is Maderno's statue of St. Cecilia - it's stunning. If I could take one sculpture home from Italy, that would be it. Also great are the Cavallini frescoes in the choir loft (not visible from main church) Check out the wings on the angels! The apse mosaic dates to the 9th century and there are several outstanding sculptures/tombs lining the side aisles. Lots of history for a small church!