After speaking with a taxi driver I was partially filled in on the workings of the system. To sum it up, walk through Manaji Rajuji Road, and someone will come up to you asking if you want girls. I was also told not to carry any valuables with me like my phone and minimal cash, because if you bring more than needed you get robbed, they will take it all.
Horny as I was, around 10:30 pm ended up walking through said road, and exactly as told, someone approached me and then escorted me into a building. I was taken into a small room, the door locked and 3 bouncers in the room with me alone. I couldn't understand the language (but the guy did say 1300 and signalled money) so eventually they searched me, checking all my pockets and took the cash I had (1600). Was led upstairs to another room after, where the ceiling was very low (Less than 6 ft high) but got a 10 minute quickie. They don't let you pick the girl but the one I had was the best out of the 3 I saw. The girls seem to range from ages 30 to 50. Obviously not going again, as curiosity is satisfied