Sounds silly, but if you have a client visit your bathroom and it is a mess it makes you look bad. We don't like to think about bathrooms but consider your own experience. Don't nice places and businesses have nice bathrooms? Have you ever gone to a yucky bathroom at a restaurant- kind of rough on the appetite.
In fact some countries are judged by their bathrooms. Would you rather go to the bathroom in Swaziland or Canada? You can bet your bottom dollar that having a nice bathroom affects the perception of your customers whether it is conscious or not.
Is your bathroom tidy?