Hi.
At present Airbnb does not collect taxes or any information regarding tax income.
But from the start of 2023 to fall in with EU regulations, hosts will need to provide details of their rental income to airbnb.
Yes, you will need to pay tax in Italy on your rental income. You can choose whether to pay a flat rate or a higher rate which allows certain costs to be deducted.
From our perspective, we’d prefer airbnb to take the tax at source but sadly they don’t.
There may be implications on your U.K. tax situation.
Hope this is helpful.