I've used this as a hidden criteria for judging a company during an interview cycle. I always ask to use the bathroom and then see how clean it is, and if it looks like it's been maintained.

I visited one private company where I talked to the owner - his office was plastered with pictures of his racing Porsche but the bathroom had rusted metal and peeling paint. Took me about 5 seconds to see where his priorities lay and I bugged out of there.