Except it doesn't seem to fill the photo of a room with CG furniture/art, more it renders a room that is almost but not entirely unlike the uploaded room and fills that room with furniture and art. Some of which doesn't seem to obey the laws of physics.

It's sort of neat, but it's basically just a Stable Diffusion img2img with a prompt like "living room full of furniture". Would be cooler if it actually put furniture into the room provided.