I would write out what the maid is showing up for. But it would be better if the maid is unseen by guests and waits until the end of each guest visit to clean. Guests deserve their privacy 🙂
Maybe if the maid sees a sink full of dishes, the guest just hasn't washed them yet.
I honestly can't think of any maintenance for a maid to attend to during a guest's stay. 🙂
What is her list of duties when there is a guest ?