Modern Neutral Apartment Makeover

I want to turn my 150 m² apartment—three bedrooms, a spacious living room, a dining area, kitchen and two bathrooms—into a cohesive modern space wrapped in calming neutral tones. The living room, all bedrooms,... (Budget: $250 - $750 USD, Jobs: 3D Modelling, 3D Rendering, 3D Visualization, 3ds Max, AutoCAD, Furniture Design, Interior Design, Lighting Design, SketchUp)