Thinking outside the box is a surefire way to create design magic, but for interior designers, it usually involves creating spaces for their clients. Warsaw-based creative agency Mamastudio got extra creative when it decided to turn a series of residential apartments into its very own boutique hotel: Autor Rooms. The agency worked with Polish architect Mateusz Baumiller to transform the interiors, adding a cool modern shower to the middle of a bedroom, using copper piping to create a built-in canopy bed, and more. The results are seriously cool. Scroll below for a tour.