For the project dubrovacka residential building, it was needed to give a new idea for the interior design of the typical apartment. For the particular project, the concept for the bahroom interior design was presented. The idea was to make a design of the bathroom in the same menner as the design of the building facade is. Useing the wood as primer material, and putting the huge mirror walls, we made this small bathroom more comfortable and pleasant. Since the area of the bathroom is very small, the solution was to increas the surface area by implementing a mirrors, and by that, make the space look even bigger. The use of the wood as a natural material was the main concept of this interior design project. We offered our client the best solution, such called thermal treated wood  - wood that is thermaly treated so that it has greater resistance to the water and moisture.