According to the new Tunisian finance law, and from January 1, 2018, a tourist tax would be applied to guests staying in Tunisian hotels, regardless of their nationality.
This tax would be paid in Tunisian Dinars by the customer on the spot at the hotel and will be mentioned in the invoice.
The tax is in the range of 03 Tunisian dinars (about 01 Euro) per night, and per adult "children under 12 years are exempt"
This tax is limited to a maximum of 07 continuous nights even the stay is greater than 7 nights.