The website lists different DJs in different bars within the club but I don't know which bar is which. Which is the one with the LEDs on the wall and the Funktion One speakers?

Green Room = Rooftop Main Room = middle floor with Funkiton Soundsystem and light system Flash Bar = Downstairs where the entrance/exit is and is almost always free

Green Room is the rooftop upstairs and Flash Bar is downstairs. They usually don't name the main room, but whoever is not listed at either Green Room or Flash Bar is the person playing in the main room with the LEDs

I agree that they should change the website to make this clear, e.g., by writing "1st floor", "2nd floor", "3rd floor" next to the names of the bars/rooms.