I had a really great time playing this! The gameplay was simple and easy to pick up, but felt a little boring after the first two or three rooms. I would love to see this expanded upon (cause its so cool), and if your open to suggestions I had a couple ideas:
You could make it so that there is different room layouts! I think even just two or three more layouts would add a lot of content immediately (especially if they had a second floor?)
Make it so that theres more than one alien species and that sometimes the human comes in for a room instead. just the alien coming (and having the same requirements on the furniture) made it so that every layout felt exactly the same except for adding new furniture three or four times.
Add some more furniture! the ones you made are so cool right now, and if you ever wanted to add more I think it would be really fun to work towards more options or variations, the way you did this with the couch variants was something I enjoyed a lot. and if you dont feel like adding new stuff entirely or over adding maybe just make exclusive skins for levels completed, overall designer rating, or maybe timed set ups.
just some thoughts, really great game so far though!