* Don't drink anything before the housecleaner comes, because if you walk away from your knitting for 2 minutes to pee, you'll never see your knitting project again
* Don't plan on doing any paying work while the housecleaner is cleaning; plan on keeping an eye on her every minute so you can stop her the instant she starts boxing stuff up "for YOU to put away!"
* If you see the housecleaner heading toward the guest room with a box, intercept her and threaten to fire her if she puts anything in there. And make it clear that the other dodge, of putting the boxes just outside the guest room door ("I didn't put anything IN the guest room!"), is just as bad.
* In fact, HIDE all the empty boxes and bags before the cleaner comes, so that she has no choice but to put things where you tell her to. If the cupboards are the only place to hide things, maybe she'll use them for their intended purpose!