I suspect he gets moved on a lot! On the other hand, did he expect you would do the cleaning and clothes washing? Has he come straight from his parental home where he wasn’t expected to do anything?
You can give him a weeks notice, no need to give a reason and perhaps for your next lodger be very clear what you expect re cleanliness.
Just a thought, is he depressed? Has he come out of a long term relationship and doesnt know what to do now?
I’ve had several lodgers over the years, and the best one, in many ways (!) was someone who was obsessionally tidy and even had everything organised by height and width in the kitchen larder. I was living with my boyfriend, now husband, in his house at the time and never worried about my flat at all while the tidy one was there.
And from now on, if anyone stays with us for a while, from a few days to a few months, I say that we have a cleaner and she will clean their room at least once a week and change the bedding. I factor the cost of her wages into their lodging rate, if we are charging anything.
I hope it goes well. 🌷🌷🌷.