I came close to that one myself once. Came home from work early, and my wife was having......... tea with a coworker of hers... true story......
But to make this fantasy reality, the couple your watching should not know your watching, or it’s staged then....... I was in a hotel room, thin walls, and the couple next door put on quite the vocal show... I laughed tho, my vision was me coming through the wall, ya 3/4 inch drill bit to get a glimpse of her ass....
I am sure those hotels have hidden micro camera....