I can't wait to host students! DH and I were talking about this recently.
My folks did it for yonks, until my dad retired from work. They also had short-term students who were at a fee-paying language school. Some of these were the spice of life and we all still share laughs about it.
As we also had my mom's nephew, our cousin Jeff, living with us most of the time, the house was always full!
We had this one language school student, Nacho (Ignacio) from Argentina. And it was obvious he'd was used to having staff. Well, Jeff, who is now a Marine officer, was at him night and day about tidying, especially as they shared a bathroom.
Nacho would take a shower and loll on the couch and Jeff would order him to wipe down everything, saying, 'Nacho! What the hell did you do, sit on the toilet and point the showerhead at yourself? This floor's like an ocean, come mop it up!'
We had another, Boder from the UAE, who tried to refuse to sit at a dinner table with women.
Then he was failing his course and so, when his male UAE friends came to pick him up, my mother said he couldn't go because he wasn't doing his homework.
His friends were flabbergasted, but powerless.
My BIL, a BIG guy, came to the door and said, 'You heard the lady, Boder! Martha, what next for Boder? Just say the word, he'll do it!'
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We girls and Jeff had fun making him fold and put away his own clothes and join the chore rota.
He only dared to balk once, to Jeff, who, although only 14, barked, 'Buck up and grow a pair, man! You do your share like everyone else or get out!'
I don't think the poor guy ever recovered!
Edited to add: my mom was a liason officer for AFS so we took in students whose host family situation had fallen apart. Some only stayed a short while till another family was found, but a couple finished out their year at our house. Needless to say, my folks have travelled to several countries now with a nice place to stay with former students!