The penthouse was built as an extension of a restored tenement house from 1912. The planned functional solutions required a general renovation of all rooms. The interior is furnished with pieces designed by Loft Kolasiński: wooden window panels, bed, mirrors, chests of drawers, benches, kitchen and bathroom furniture, wardrobes, library, display windows, internal carpentry (doors), steel joinery and steel shower cubicles. In addition, the project includes classic furniture, lighting and accessories from artists such as Isamu Noguchi, Carlo Hauner, Johannes Andersen, Kai Winding, Edmund Homa, Verner Panton, Aksel Bender Madsen, Overgaard & Dyrman and Patricia Urquiola. The interior is accessorised with paintings, graphics, sculptures and ceramics (Igor Mitoraj, Leon Tarasewicz, Aleksandra Mysiorska, Bartosz Kosowski, Michael White, Antoni Janusz Pastwa, Robert Maciejko, Malwina Konopacka ...).