using a 3d model of a house interior with simple walls and flooring preserve the existing door in the model and add minimalist furniture in a modern style the furnishings should feature clean lines and simple materials such as light wood matte black metal or white surfaces flooring keep a neutral design such as light parquet or polished concrete walls maintain simple white walls without complex decorations or textures furniture a minimal sofa in light fabric white or light gray coffee tables with thin tops and black metal frames lightweight chairs with scandinavian design simple shelves with no embellishments holding only a few decorative objects like books or minimalist vases lighting fixtures such as pendant lamps with industrial or contemporary designs preferably in neutral tones create a bright and welcoming atmosphere using natural light or soft artificial lighting ensure the result conveys elegance and functionality without altering the existing structure especially the door architecture
