At what point in the invoicing does your manager take their percentage? If you have Airbnb taking their cut of the advertised price first then your cleaning fee ( which is either advertised or not )
Then your linen hire and consumables. Do they take it after all the above or before the linen hire and consumables?
You can negotiate any management agreement you want. But a typical real estate management fee is off of gross income. (Before expenses).
The fee comes off the top, gross usually.
RR