A man and a woman entered the unit bathroom, flirting with each other. They undressed each other as they got into the bathtub. With her breasts, seemingly defying gravity, swaying, she diligently washed the man's body while he filmed her with his smartphone. She sandwiched his erect penis between her soft breasts, stroking it while licking his nipples. The two then began having sex from behind right there in the bathtub...