I love it!
It'd be nice if there was a way to say what is and is not changeable.
For example, I noticed it usually improves the view outside of the windows to be beautiful vistas -- not something you can do without moving. Being able to request that other things not change, like the floor plan or the flooring for example, would be nice.
I like how the AI will randomly turn furniture into a dog, as if to say, "improve this room with a furry friend." :)