A friend of mine is considering to remodel a part of his apartment building. He would love to create a 3d view of what the new section would look like, since it'll make his decision making process easier. I recommended Google sketchup. While it worked rather well, moving around in sketchup is cumbersome and it is almost impossible to move around a ``person'' model to understand the actual restrictions imposed on him. Since the apartment will be under the roof with angled walls, this is a critical part. Can you recommend me some better software for this type of task?