El cuco (2023)

In the film El cuco (AKA The Cuckoo’s Curse), Marc and Anna agree to swap their home with Hans and Olga, a retired German couple they met online. What seemed like a peaceful opportunity soon turns into a nightmare when they begin to guess that the elderly couple have very different plans for them.
At the 27th minute, a couple is sitting at the kitchen table eating a slice of cake when they see Chacha Huang walking through the courtyard totally naked. When they go out to check, they find her submerged in the pool. A minute later, Belén Cuesta, who is pregnant (it’s a prosthetic belly), undresses and is left in her panties and bra, then sits on the edge of the bed. A man behind her unhooks her bra and frees her breasts, then kisses her. At the fifty-fifth minute, Belén Cuesta is sitting naked in the bathtub while a man pours salts into the water. When he is done, the man gets into the tub and sits next to her. Later, the man is sitting behind her and massaging her. The atmosphere becomes hot and the two have sex in the tub in a couple of positions. At the sixty-second minute, we see Belén Cuesta naked in the shower. It is a full-frontal nude, but the actress is probably wearing a merkin.