The building was a brothel where women who were prostitutes had sex with men for money.

VOA : special.2010.02.28

Billie's mother mistakenly sent her to live in a brothel.

VOA : special.2010.02.28

Hill says when police raid a brothel, if they've had the right training, they will be able to tell when a woman is willingly committing a crime or has been forced into prostitution.

VOA : standard.2010.07.23

Right now, there is a girl, somewhere trapped in a brothel, crying herself to sleep again, and maybe daring to imagine that some day, just maybe, she might be treated not like a piece of property, but as a human being.

WHITEHOUSE: President Obama Speaks to the United Nations General Assembly | The White House

Mr. Hitchens's memoir covers deeply personal, occasionally embarrassing territory, including his one night stand with Mr. Amis's late sister Sally and the pair's botched attempt to "research" a brothel scene for Mr. Amis's novel "Money" at a seedy New York massage parlor.

WSJ: Martin Amis and Christopher Hitchens, Authors and Friends

The business plan has to include working hours, conditions and prices related with the rent of brothel windows which seems to be one of the causes of problems because the prostitutes are forced into long working days to cover the high costs.

FORBES: Reforming Prostitution in Amsterdam Includes a Business Plan and Business Hours