@Lydia16
There are just some people in the world who think if they are paying guests , they can be dirty slobs regardless of whether they are staying at someone's home thru Airbnb or at a hotel. I'm not saying this is right - but it's just the way some people are and as a host, you'll have to find a way to deal with it.
You should consider including a check-out checklist - what you expect guests to do before checking out. Such as clearing away left over food, taking out trash, basic tidying and putting things back where they belong etc. What seems obvious to you may not be the case for others, so it's best to be specific and state the obvious to manage everyone's expectations. The broken toilet handle IS something you should get compensation for and I hope you get paid for that. Also, don't be afraid of bad reviews. Good luck~
And @Geraldine50, I agree that it is rude of people to leave urine stains "around" a toilet (pubic hairs I doubt are intentional and people tend to be oblivious of how much they shed) BUT like I said before, some people think that as a guest, they can be as dirty and disgusting as they want to be and expect others to clean up. It's not right but I consider it as a part of the "dirty" side of hosting. Some one has to scrub toilets to keep them clean - some people clean up after themselves, some don't. If you get a guest that doesn't, then it falls on you. Simple~