Right, I really can't believe any of you haven't noticed this yet. Move to bottom if you want to figure it out yourself.
Spoiler:
1st Film - Neo meets Trinity for the first time in a club. Oooooh, isn't it quite interesting that they are all wearing S&M gear 🙂 Well guess what I am 99.9% sure that it's Club Hell.Now the other thing that I can't believe none of you have noticed is that all the people in Club Hell aren't people. They are programs. Vampires 🙂 I can't remember any other supernatural or undead creature which can cling to a ceiling 😄 or walk on it for that matter 😛 I have a feeling there is gonna be more than vampires in there also.
If you don't want it pointed out to you then here are some hints :
1st Film - Neo meets Trinity for the 1st time.
Enter The Matrix - Chateau