I've been reading this post with quite some amazement. Is it just me that thinks that the suggestion of baking bread before a guest's arrival is lunacy?
I've stayed in many 5 star hotels but have yet to encounter one where the head chef pops down to the room to bake some quick bread before my arrival, just to make the room smell nice. I've also viewed and purchased houses without the real estate agent baking me any bread, I regret not asking for my loaf on top of the mortgage now.
In all seriousness though, some excellent suggestions here. Just think baking bread is pushing the boat out, by just a tad, and might help create unrealistic guest expectations for day-to-day hosts who work hard keeping their space clean and thus smelling nice.