I also recommend sh3d to do exactly what you needed: got the plans of my home (straight out pdfs) fed them to an LLM and got the 3D version of it in minutes.
Then started plopping in furniture and such, wonderful experience. Then you can navigate your home as a "visitor" to get a better feel. Definitely more realistic than Minecraft for actual planning.
i think you and the previous person both approach it from a different angle than me. haven't played minecraft in a while and as a kid i used to try to build buildings i knew, and then play minecraft with them as my base. so go hunting, start farming, search for diamonds etc.
sh3d removes the whole game-aspect and acts as a room planning tool, which is of course also neat, but i have no need for it. i also don't need to navigate my home as a visitor in a software, as i can just navigate it in meatspace.
but, if or when i move, i think i'll actually come back to sh3d! just don't see the point right now. maybe claude can help me mod sh3d so i can fight off mobs with a bow and arrow, or blow it up with some TNT :D