A redditor called joelikesmusic reported that a friend of his had been checked into a weird, narrow dungeon-like theme room at the Hotel Zaza in Houston (it's got lots of theme suites -- I once stayed in their awesome space-themed one with my family, on the way to my honeymoon). When he complained, the front desk apparently told him that it was a mistake -- no one was supposed to use that room.
The ZaZa's management told the press that it was a "prison" themed room, and that there was no mystery, but intrepid redditors have been examining the pictures (especially the portrait of Jay Comeaux, a banking exec from the disgraced Stanford Banking Executive, and have been spinning out theories about secret societies and rituals in the comments.
However, one commenter called lejefferson makes a plausible case that the room is a sex-dungeon with a one-way voyeur's mirror, used by rich weirdos:
What person that you know keeps a creepy picture of a guy over their television. This is obviously a secret room either personal or for a small group of people for sexual liasons/ S&M prostitution or worse. The mirror and small space of the room also indicates there is a good chance that the mirror is two way and that people could pay to come watch the sexual/S&M events occuring. The photo of a Stanford Banking Executive, (Jay Comeaux), on the wall further indicates that this is a high society sex room. The fact that the clerk said, "This room isn't supposed to be rented out" indicates that there was a big mistake and they didn't want anyone to find out about the room. The bricks on the wall line up exactly with the placement of the mirror suggesting that they do not continue behind it but that this is a two way mirror.