Whilst the red light area around the train station is rife with unauthorized street prostitutes, the legal stuff takes place in "massage salons" or via escort service agencies.
The research, which refers to "Newsweek" that every fifth student in Poland regularly sells sex, is not completely true.
Some of the girls want money directly, but other girls only want a sponsorship, so they can tell themselves that they are not prostitutes.
Finding sex in Warsaw is very easy because there are many brothels, erotic massage parlours, strip clubs and escorts working all over the city.
It's always good to be little bit suspicious than blindly believe that those kind of girls would have only good intentions for having fun with you.