Use the "Moovit" app for the most accurate real-time updates on Rome's notoriously unpredictable bus schedules.

Head to the "Gianicolo Hill" (Janiculum) at noon to hear the daily cannon blast and see a stunning panoramic view of the Roman skyline.

Keep your bag in front of you on Bus 64 (the "Pickpocket Express") which runs between Termini and the Vatican.

Avoid buying "skip-the-line" tickets from street vendors near the Vatican; they are often overpriced and sometimes completely fraudulent.

Climb the "Aventine Hill" to look through the "Knights of Malta Keyhole" for a perfectly framed view of St. Peter’s Basilica dome.

Shop for fresh produce and local cheeses at the "Mercato Testaccio" instead of the more tourist-heavy Campo de' Fiori.

Learn to use the "Tap & Go" system on the Metro—simply tap your contactless card on the reader to enter without a paper ticket.

Walk through the "Trastevere" neighborhood in the early morning to see the ivy-covered alleys before the evening bar crowds arrive.

Download the "Free Now" or "itTaxi" apps to book licensed taxis; never accept rides from "freelance" drivers offering services at the airport or Termini station.

Carry a reusable water bottle and refill it for free at any of the "Nasoni" (curved nose) cast-iron drinking fountains scattered throughout the city.

Book your Vatican Museums and Colosseum tickets online at least 4-6 weeks in advance to avoid 3-hour long ticket lines.

Dress appropriately for churches by covering your shoulders and knees; carry a light scarf to wrap around yourself if you're wearing a tank top or shorts.

Drink your espresso "al banco" (at the bar) like a local; sitting at a table often triggers a "servizio" charge that can triple the price.

Avoid any restaurant with "buttadentro" (touts) outside or plastic food displays; look for "Trattorias" in the Garbatella or Testaccio districts instead.

Visit the Trevi Fountain at sunrise or after midnight to experience its beauty without the crushing midday crowds.

Validate your paper bus or tram ticket in the yellow or green machines immediately upon boarding to avoid a hefty on-the-spot fine.

Eat "Carciofi alla Giudía" (Jewish-style artichokes) in the Jewish Ghetto for one of the most iconic and ancient Roman culinary experiences.