I personally hate (and always have hated) the use of the doorway tiles as flooring. It's creative, sure, but it hurts my eyes. So that, I don't like. I also don't, and never have, liked the piling up of the default house roof tiles as walls.
I do like the layout of the room though. It's simple, and in a lot of ways realistic. Way better than the random jagged circles with a hexagon jutting out of it people make. I like the diamond shaped carpet, and that little alcove at the back. Not sure what it is, but it's cool.
I think that the walls could be good, but are a little over detailed. I like plants in the wall, but to the extent it looks like they're growing from the outside - unless I know it's some magic tree fairy house or something.
So, that's my opinion.
- Kiwi