1. Valid passport: Ensure that your passport is valid for at least six months beyond your planned stay in Italy.
2. Visa: Check if you require a visa to enter Italy. This depends on your nationality. Citizens of the European Union (EU) and the Schengen Area do not need a visa for short stays.
3. Passport-sized photographs: Usually, two recent passport-sized photographs are required.
4. Proof of travel arrangements: Valid travel insurance with a minimum coverage amount. Flight itinerary or reservation.
5. Proof of accommodation: Provide documentation such as hotel booking or invitation letter if staying with a host.
6. Financial proof: Proof of financial means to cover your stay (bank statements, traveler’s cheques, etc.).

The duration of an Italy tourist visa allows for a maximum stay of 90 days within a 180-day period. This means that you can stay in Italy and other Schengen countries for up to 90 days within any 180-day period.

The visa processing time can vary, so it is advisable to apply well in advance of your intended travel dates.