Throughout Atrani, you'll spot signs with prominent green arrows—these are actually flood evacuation markers, but for us, they are guides to beauty. Following them leads you to the charming Piazzetta Umberto I, right in front of the San Salvatore de' Birecto church. It is intimate, enclosed by traditional houses, and serves as the living room for locals. Grab a coffee here and watch the world go by; it's a signature sight that embodies the essence of Atrani.