What annoys me is that I fully furnished my house myself before getting a steward.
When I got a steward, the options were available for her to furnish the place (even though I'd fully done it myself). So I paid her to do it, thinking she would add additional stuff. But she doesn't, there is no new stuff to add.
So this is a bug: the option for the steward to furnish a room should not be available if it's already been furnished by yourself.