In early twentieth century, in addition to several dozen flats, the building at Młyńska12 also housed a fudge factory. Currently, Młyńska12 is strictly protected as a listed building. During the renovation, the building was recreated on a scale of 1:1 which was possible thanks to photographs and hand-made drawings by Hoffman himself.
The original structure has been copied down to the last detail typical of the period when the building was created – window fittings, ornamental fraises, plasterwork or decorative mouldings are all a faithful reproduction. Młyńska12 is a monumental and decorative example of historicism representing a wide spectrum of sculptural and ornamental forms.
Works on reconstructing the building were launched in 2013 and took nearly 3 years, involving almost 1000 people. Original wall paintings in all staircases were recreated, 3000 sq metres of stone were used to cover floors, 1000 sq metres of glass were put on the walls and 294 windows were produced modelled on the historic originals.