Complete Apartment Layout Redesign

I have attached the existing floor plan of my apartment and I want to start from scratch. The current layout wastes far too much square footage: the master bedroom enjoys an en-suite with a window while the hallway bathroom sits in the dark, and the kitchen stretches out as a long, narrow corridor... (Budget: €8 - €30 EUR, Jobs: 3D Modelling, 3D Rendering, Building Architecture, Building Design, Home Design, Interior Design, Revit, SketchUp)