The team manages to quickly scour the the second floor, finding nothing of note. the private stages allow for a more intimate setting for the girls to work with their clients. The office is locked, but a swift kick deals with that, for all the good it does, again it contains little to note. Recording equipment is found in one of the private rooms, but it is a higher quality and current tech besides, including wireless capability, compared to the ancient (turn of the century) junk on the roof. No coax anywhere. Excavating the ceiling to trace the cable would be a major project that you are ill equipped to deal with, even if you had the time.
Downstairs the only information of value you get is that Bacchus is a friend of the owner and occasionally works the door for extra nuyen, he hasn't been in in several days.