The guest room. After Mrs Müllerová's death, this room and that adjacent to it, formerly the servant's apartment, were joined together - the only structural alteration to have interrupted Loos' original interior layout in the villa.
The walls are painted a colour that precisely matches the original tones as identified by intrusive survey. The fittings within the room were not preserved, but because it was decided to site the Adolf Loos Study Centre in the space, this was in this instance actually advantageous. Architect Stanislav Picek designed the fittings of the newly created centre.