The commission was to transform 4 dwellings of the same building into tourist apartments. The requirement to modify as less as possible the existing elements had an important influence to define the strategy that was mainly focused in two aspects. Firstly, it came the desicion of where to locate both kitchens and bathrooms. They are all close to patios to get easier the existing sewage disposal. Secondly, the goal was to design a room module adaptable to each room of the apartment by different combinations. The modules are made in workshops and they include storage and beds as well as electric and lighting systems. The images show the first prototype in its place.