That's a tough question to answer. If you're traveling on a budget, you could probably plan a weeklong trip to Italy for €700-1,000 (excluding international flights). Keep in mind – that's on an extreme budget. There will be no bougie rooftop drinks, via del Corso shopping sprees or first-class train tickets on that itinerary. If you want to visit Italy for a week on a mid-level, more comfortable budget – you'll probably spend more around the €2,000-3,000 range. However, your trip to Italy will cost what you make it cost. A dorm bed in a hostel costs around €30-50/night, meals at normal restaurants cost on average €20/person and trains are very affordable. If you want to drop €600/night on the Brunelleschi Hotel in Florence – that's your call.