What's a good 3-day itinerary for Rome?

The Pantheon at 8:30am is a different building than the Pantheon at noon. Morning light drops through the oculus in a clean column, the marble floor is cold under thin soles, and you can actually hear the space — a low hum that disappears once the crowd fills in around 10:30. Get your caffè at Sant'Eustachio Il Caffè two blocks south (€1.50 standing at the bar, which is how Romans do it). By 10 you're at Piazza Navona; by 11, Campo de' Fiori's morning market is winding down but still has the best dried porcini and chili flakes if you want to take something home. Lunch at Emma Pizzeria on Via del Monte della Farina — the margherita with bufala runs about €12, and the crust has that specific Roman thin-crisp char. Trevi Fountain at 3pm is going to be packed. That said, there's no avoiding it. Go, throw the coin, take the photo, leave in fifteen minutes. Spanish Steps at 4, then walk north along Via del Corso for the passeggiata as the city cools down.

Here is the single most useful sentence in this itinerary: St Peter's Basilica opens at 7am and there is no queue at 7am. Not a short queue. No queue. You walk in, the nave is nearly empty, your footsteps echo off Bernini's baldachin, and the morning light through the east windows turns the travertine gold. Spend ninety minutes inside. Then cross to the Vatican Museums for your 9am timed entry — book online at least two weeks ahead, €17 per person, and do not buy from resellers. The Sistine Chapel is at the end of a mile-long forced march through galleries; the ceiling is worth the sore neck, but the room itself smells like a thousand tourists in a space built for forty cardinals. Mind you, that's part of the experience. By 12:30, escape toward Trastevere. Grab a supplì (fried rice ball, €2) at Supplizio on your way across the river, then hit Da Enzo al 29 on Via dei Vascellari for a proper 2pm lunch — cacio e pepe, €11, and their artichokes alla romana are the standard I judge all others against.

Pre-book your Colosseum ticket for 8am — the €16 standard ticket covers the Forum and Palatine Hill too, valid for 24 hours. The arena at 8am still has morning cool rising off the stone, and the scale hits differently when you're not fighting for elbow room. Walk into the Roman Forum from the Colosseum-side entrance by 10. Palatine Hill takes about ninety minutes if you linger at the overlook. Lunch in Celio — Luzzi on Via di San Giovanni in Laterano does an honest €9 pasta plate, packed with off-duty carabinieri. After lunch, Metro B from Colosseo to Circo Massimo, tram 3 south to the Appian Way. Rent a bicycle at the Appia Antica park entrance (€5/hour) and ride basalt cobblestones past crumbling tombs and umbrella pines. The stones are uneven. Your wrists will feel it.

The Appian Way on a late afternoon, with amber light filtering through the pine canopy and city noise completely gone, is the single most peaceful hour you'll spend in Rome. Return by tram for dinner at Cesare al Casaletto in Monteverde — their tonnarelli cacio e pepe might be the best version in the city, and a full meal with wine runs about €35. Across all three days, you're looking at roughly 30 kilometres of walking plus the bicycle stretch. Rome's cobblestones are murder on thin soles, so bring shoes with real cushioning. One more thing: the Roma Pass (around €53 for 72 hours) covers your first two museum entries and unlimited metro and bus rides. If you're doing Colosseum plus Vatican Museums, it roughly breaks even — but the real value is skipping the metro ticket machines, which are slow and often broken.