The interior design was realized in one of the few Warsaw apartment buildings to survive World War II. The respect of the original space was an extremely important design rule. Parquet floors, doors, windows, walls were carefully renovated using the knowledge of local craftsmen. The new furnishings and appointments are all of noble materials and respect the original architectural lexicon, with beautiful ceiling ornamentation and furniture, but the overall effect is modern, spacious and inviting. This refined, classic interior was thus freed to become a frame for the owner's art collection.