Been tracking every expense for 2 weeks. Here's what things actually cost versus tourist pricing:

Transport: Metro/bus €1.50 single, €29 weekly pass. BIT 24hr passes €8.50 unless you take 6+ trips.

Coffee: Espresso €1.14 average at bar, cappuccino around €1.50. Tourist areas charge €3-5 for identical drinks.

Pizza slice: €2-3.50 local places, €5-8 near monuments. Same pizza different location.

Gelato: Proper gelaterias €3-4 per serving, tourist places €6-10 for smaller portions.

Water: €0.35 supermarket 1.5L bottle vs €3-5 tourist shops. Free from nasoni fountains everywhere.

Museum entries: €12-16 major sites, first Sunday monthly free but expect 2hr+ lines.

Restaurant dinner: Local places €15-25 per person, tourist traps €35-50 for worse food.

Daily budget €40-50 eating well, €25-30 surviving, €80+ if you hit tourist spots.