For the record, the rumor is that he watched prostitutes pee on the bed that Obama slept on when he visited.

Using prostitutes to get important people in compromising situations is a well worn KGB trick and obviously standard practice for Russia to put recording equipment anywhere they think they can get away with it.

So really the question is whether you think it's plausible Trump would want to watch such a thing or at least be ok with staying in the room while it happened. If he was there, it was almost certainly done by prostitutes and almost certainly recorded.