From the start there were rumours about a mysterious BDSM dungeon in the City, but then devs got cold feet, dropped the story and questline and gave Kate and Julia a homemade BDSM room in the basemant of Julia's house. That's not the same. Unfortunately the outcome is lame and boring as in other games where homemade BDSM rooms were added. There is nothing to explore, no other people there except known, invited friends, no unknown or restricted rooms to find, unlock and explore.
We still miss the club where Veronica dances. Another dropped story. It could have been the city BDSM club. Kate could have gone there with some of the girls from school like a date, to explore, to have some fun, to meet new people, maybe to earn some money ... Devs missed a huge opportunity to make the city a little bit bigger and more interesting.