At that time, the spa was still used only in the summer season. This also resulted in some parameters of the building, which today cause problems in its restoration. For example, the filling of the reinforced concrete skeleton was brick walls only 25 cm thick. Glazing in the social area, in the hallways and on the stairs is just simple. Only in the rooms is there double glazing in Kraus-type windows, which allow remarkable sliding of the window sash to the edge. This gives an impressive panoramic view of the park, which begins right at the spa. The six-storey accommodation part is a dispositional double wing. In the wide corridors there are freely placed columns, the diameter of which gradually decreases upwards on the individual floors. The retracted columns made it possible to create long sash windows on the west façade, quite in the spirit of Le Corbusier's principles of modern architecture.
The architecture of the spa house attracts with several remarkable elements. On the east side of the façade of the bed part are the balconies of the rooms with elegant metal railings, reminiscent of the Gropius Bauhaus in Dessau. The opposite side of the bed tract has continuous sash windows and creates a peaceful backdrop to a two-storey social tract with a roof terrace and a wide covered terrace on the first floor.
The pergolas of the terrace on the roof of the bed tract have an interesting, softening impression. Krejcar was very clearly based on the architecture or design of ships, which at that time represented a kind of aesthetic ideal. This steamy, nautical, metaphor is represented not only by the color white, metal railings, round windows, terraces resembling ship decks, but especially by the very rounded front of the social tract. Krejcar, who himself published the article Architecture of Transatlantic Steamships (LIFE II), was a promoter of these forms, which were characteristic of purist-functionalist architecture at the end of the twenties of the last century. In the spirit of this aesthetic, Machnáč even solves the shapes of chimney bodies on the roof of the building at the Machnáč Spa House.