Stress and dealing with a grade A slob

So right now this is my 7th week into University living and like I said before it's been a bit of a bumpy ride. Moving away to University is a big deal, theres lots of things you have to start to do that you never had to do before. For example cook for yourself three times a day, do the food shopping, wash your clothes, wash your bed sheets, change the bed, wash your bathroom, clean the kitchen, clean your dishes, pay the bills ETC. Basically things you never even thought twice about at home but right now are every day things and if that wasn't enough to try and get used to, life also likes to throw other hurdles in there like F*ckin'slobs who wouldn't ever dream of cleaning up after themselves even if their live was on the line. This is where the stress part comes in. For example you spend a good 2/3 hours of your day cleaning the kitchen making sure it's presentable and hygienic for everyone even though you didn't make the mess, you sweep the floor, clean the hob, clean the table, wash down all the sides, unclog the sink, EVERYTHING for two days later for it to be a mess AGAIN. You've already left a kind note to this person asking politely if they'd pull their wait so this time you're mad, you leave a slightly less kind note but still with a pleasent thank you an only to get a rude reply telling you that "we need to get 1 thing straight i don't care what happens to the kitchen you dont get to boss me around". So how do you handle this? And what are my tips for dealing with the frustration of living with a 'grade A slob'.. well firstly breath, take a step back, don't let them wind you up because at the end of the day they don't care AT ALL, so why should you? Just relax, the only thing you can do in this situation if the person won't listen to you is go higher up, so tomorrow me and my flat mate are going to complain to reception and pray that something changes. Wish me luck.