The project concerns the complete redefinition of the interior spaces of a vacation apartment used both in winter and in summer by a family of four often accompanied by relatives and friends. The original configuration had a strict separation between the living area and sleeping area; the rooms and the bathroom were in fact reached along a corridor impractical and wasteful of valuable space. The need to create a second bathroom to a room service required a rationalization of space and a reassessment of the relationship between different environments. The new layout provides access to the bedrooms and the main bathroom directly from the large living room features a long wooden wall. This large wooden monolith is configured as a three-dimensional element which performs the function of separation but at the same time also of union as it is recognizable by all environments; it integrates the access doors and wardrobes accessible from the inside of the rooms or from the corridor. From the aesthetic point of view the action is characterized by the use of simple and contemporary forms juxtaposed use of authentic materials such as stone and wood to retain the ambiance of a mountain residence.