When a star puts on a concert residency, the talk is usually all about the stage. With Bad Bunny, the story moved backstage - into a pink building of 50 square metres called "La Casita", a space that has become the main attraction for the guests at his Madrid concerts.

The idea is not a random pink box. The space is inspired by the traditional houses of Puerto Rico, the singer's homeland, with touches of fifties Palm Springs style. It is not just aesthetics - it is nostalgia turned into an interior, a piece of home carried into the middle of a European metropolis. In a world where concerts increasingly look the same, this little house tells you where the man who sings comes from.

Inside, vivid tones dominate, along with vintage storage furniture in a seventies spirit - the kind of cabinets we all remember from an old kitchen. There is a VIP bar with a fridge for drinks, large-format TVs, comfortable sofas with side tables and - the detail that makes the space alive - foosball tables and corners for board games. The lighting is deliberately dimmed, enough to watch the concert, but also for the space to breathe warm, not like a shop window.

Names like Penelope Cruz, Ana de Armas, Ester Exposito and Marta Ortega have passed through the little house - but that is the less interesting part. More interesting is that one of the world's biggest musicians, with every means to build a lavish VIP lounge, chose to recreate a modest little house from his home island. The point the Balkans understand well: real luxury is sometimes not marble and gold, but the feeling that you are home - even when you are on tour thousands of kilometres away.