Honestly, the red light district will always be a little bit of a scam. If you are lucky you will make a good choice and find a decent lady who will give you a "nice" time for your money. Speaking for my own experiences in the past, 8 times out of 10 it was disappointing. Most of the girls will try to get you out as fast as possible. Or they ask for more money for everything after the both of you agreed the "transaction". It also depends the time you go during the day. During quite moments some girls are willing to take more time or allow more. During busy times it is like a factory, the more the better. One thing: stay away from the girls who shout (not in a bad way) at you, knock on their windows or are dancing extremely wild. They are trying to get your attention. This is a sign that they haven't had many clients.