The city of Leiden, Netherlands, is launching a summer initiative to combat the growing trend of illegal prostitution occurring in student housing. Investigations revealed student rooms are increasingly being sublet to sex workers, effectively turning them into temporary brothels. Authorities discovered evidence of this activity through online advertisements. Leiden is the first municipality to proactively address this specific issue with a dedicated “summer offensive.” The move aims to protect students and address the illegal sex trade operating within residential areas. Local officials are concerned about the exploitation of both the housing market and sex workers involved. Further enforcement actions are expected throughout the summer months.