thorar asks: "I'm willing to move to another flat in town (or to restructure the one I'm currently living in). I'd like to create a detailed map of the apartment to study alternatives without much pencil and paper, possibly with appropriate furniture and 3D rendering. I'm not an expert in Studio Max nor similar softwares. I'd like something as simple as IKEA Kitchen Planner, but all Google serches lead to some software suite that looks unprofessional or Windows95-stylish. What would you use?"
There are numerous commercial alternatives for such an application, but is there anything like this available via Open Source?