Today we would like to present some interesting apartment interiors that we think fall in the category of “complex” arrangements. That is because there ere many elements that needed to be combined and placed together in the same room. You are looking at a two-story high apartment from Portland, Oregon that was developed in a vintage building, respecting the construction’s main architecture lines.The project belongs to Sienna Architects, an architecture company from USA. It was built on a 2,200 square feet surface and the total costs were $2,035,000.  Glass stairs connect the two floors and also give the place a contemporary and modern touch. Colorful elements (like the yellow armchairs and purple cushions) cheer up the room and become the focal point. Please let us know what you think.