You can choose the design of the couch based on the concept of the house so it will fit naturally in the room. Talking about the concept of the room, these days, there are many people use minimalist concept for their house. Not only that it is also durable in term of style, but it is also very simple. The cushions are usually designed based on the couch, but you can always change the variation of the pillowcase that you can design it by yourselves as long as it is suitable with the overall design and color of the couch. Architecture.