The tourist tax is not included and must be paid in cash at the property:

Sorrento, Piano di Sorrento, Sant'Agnello: €4 per person, per night; from April 1st to October 31st, applicable for a maximum of 7 nights.
Meta: €2.5 per person, per night; from April 1st to October 31st, applicable for a maximum of 7 nights.
Positano, Praiano: €2.5 per person, per night; from April 1st to October 31st.
Massa Lubrense: €3 per person, per night; from April 1st to October 31st, applicable for a maximum of 7 nights.