Personal cleanliness in past ages is a fascinating topic and one too big for any blog post. There is a perpetual fascination about how badly people smelled, how they wiped their bums etc etc.
Just now the Musee du Moyen Age is running an exhibition on personal care from antiquity onwards which give some clues. And, having seen the exhibition, I'd recommend it if you're in Paris.
It won't tell you about people's toilet habits, but does tell you about their attention to detail and personal care.