Need simplicity for your live? Try black and white interior design in your apartment. Especially if your apartment is small, simplicity theme make the space will feel spacious. Small space will feel loaded if you choose lot of colors.
Just like these interior pics, white and black applied for all parts. Sofa, dining chair, doors, frame, wood blind, use black colors. Wall and plafond use white colors. Several furniture use white or black colors or combination of those colors.
For warmness impression, this apartment interior use bamboo parquet. Bamboo is chosen because of the unique texture and the colors intent to bright, so match with black white theme.
Is Accent Needed? It is up to you. But however, simplest and monochrome interior must have accent so it will not feel boring. You can put red lazy chair, and ebony plywood panel, just like interior pic here.