Ciao @Tina11076 and thanks to @Paula for reaching out to me.
For Rome Airbnb collects the tourist tax (6 euro) directly during the booking and remits it to the Municipality of Rome. It is marked as a separate item in the payment of the stay. No tax in cash is required.
If there is a separate supplement for final cleaning (that may include the linen), it should also be mentioned separately in the payment items and no cash should be required.
These are the rules that apply to short-term tourist rentals only.
There are also Hotels that rent out their rooms or suites on Airbnb but then other rules apply.
There are also B&B, Casa Vacanze, Affittacamere etc. that may have other rules. When renting through Airbnb in Italy it is not always possible to know what kind of accommodation you are going to rent. But apart from the tourist tax which in most municipalities is to be collected in cash at check-in, nothing else should be requested in cash.