Dutch here. I don't for wherever. However, hotels are required to register their occupants to the city (council). This reasoning given is 'security', that is,

Dutch here. I don't for wherever. However, hotels are required to register their occupants to the city (council). This reasoning given is 'security', that is, the city should know in case of an emergency ( say, a nuclear attack ) who to rescue. Ahum. Of course, there is the nightly tourist taxes, that might have something to do with it too.