I rented a two bedroom apartment with adjoining shower with a guy I knew from work. He was a nice enough guy, but his cleaning habits left a little to be desired to say the least.
He only bathed like twice a week. He worked in a fast food joint so he smelled of burnt grease and it eventually permeated everything in the place. I once used a pair of his beyond funky socks to ward off a strange neighbor's dog who kept shitting in front of my door. When he did bathe, he'd leave a horrible mess in the shower. Occasionally the drain would clog with his hair (it was rather long.....and greasy) and the filthy, disgusting water would sit in the tub until I noticed it and fixed it. His bathroom was so disgustingly filthy, his friends wouldn't use it and they'd ask to use mine. I didn't mind, but I did reserve the right to refuse entry and did on occasion.
After about 4 months of this shit, I had a little "talk" with him after work about the more disgusting habits and things went fine after that. We ended up living together for another 8 months until he got himself his very own sugar momma.
Kind of a side note, but as disgusting as this guy was, (I mean, he was a nice fellow, but a little this side of "funky hobo") he got all kinds of action. Not just from fellow hobos, but from some real good looking girls. I was no slouch, but he always had someone warming the bed for him.