The "Via dello Zingaro" wall sign may be the previous name of this street. If you check the street numbers on both sides you'll notice that even after "Via dello Zingaro" they continue to grow in their sequence when instead they should start over or simply break the sequence at the beginning of the other street. Street numbers actually starts from "Via Cesare de Lollis" sign on the street's uppermost part which overlooks "Piazza Gian Gabriele Valignani". There are odd street numbers on the left side: 7...9...11...13...27..."Via dello Zingaro" sign...29...31...33...35...37...and so on. Street numbers are even numbers on the right side: 20...22...24...26...28..."Via dello Zingaro" sign...30...32...34...36...38...and so on. So the only explanation is that "Via dello Zingaro" simply no longer exists. "Via Cesare de Lollis" is actually the whole path from "Piazza Gian Gabriele Valignani" to "Piazza Giacomo Matteotti". I checked Street View pics updated to 2020 (very reliable) but I could also confirm it in person. I make the correction and close the note.