It is quite possible to convert the bathroom. It is necessary to correctly determine the connection of the heating unit (firebox for the sauna), prepare lumber. It is desirable to make a shelf wooden. Take care of fire safety measures. Become. Construction must begin with the installation of the floor. Floors can be made with plank or from ceramic tiles. The best wooden fields, but the tree is not durable in such conditions. Steam, acting on a tree, will destroy it and in a few years you will have to change the floors. Ceramic tiles are clean and hygiene. True, the floors will turn out to be cold, but durable and durable. Then the frame is installed, on which the shelves will be installed. It is also necessary to determine how the water supply will be carried out, think about how ventilation will be carried out. If there are no skills in construction, then it is better to contact specialists who will make work efficiently and safely.