Information: 800 160 000 Downtown Rome several post offices are open Monday through Friday from 8:30 to 18:30, and on Saturday mornings from 8:30 to 13:00. Here follows a short list: Piazza San Silvestro 19 (Piazza di Spagna) Via di Porta Angelica 23 (San Pietro) Via Marmorata (Piramide) Viale Mazzini 101 (Prati). Centro Storico : Piazza S.Silvestro, Mon - Fri 8.30am - 6pm, Sat 8.30am - 12.50pm. Metro A : Spagna Termini : Via Terme Diocleziane 30, close to the Mc Donald's on Piazza della Repubblica Mon - Fri 8.30am - 6pm, Sat 8.30am - 2pm. Metro A : Termini Vatican : Via di Porta Angelica 23, close to Piazza Risorgimento, Mon - Fri 8.30 - 6pm, Sat 8.30am - 11.50am. Metro A : Ottaviano.