You can use private notes to keep track of cleaning plans - I don't find it that useful though so we use a shared Excel file on Google Docs instead so the cleaning team knows the requirements. We also use it as a reminder of reasons for vsiits such as birthdays so we remember to leave a special little message and gift 🙂
You (and your co-host if you were to have one) can see the private notes but these are never visible to guests.