The Lisbon municipal tourist tax came into force on 1 January last year at the rate of €1 a night up to a maximum of €7.

Airbnb collects the tourist tax and sends the money to the council every quarter.

In a statement, the company said that “the Portuguese capital continues to be the city that receives most Airbnb guests, with a total of 718,000 travellers in 2016, which is a 66 percent increase compared with the year before.