Common Airbnb Questions
Does the Airbnb Service Fee apply to the Cleaning Fee as well?
Yes, it does.
The Airbnb Service Fee applies to the total price set by the host, which is the nightly price (including additional fees, such as the Resort Fee)and the Cleaning Fee.
This is also clearly mentioned in the Airbnb official article about their Service Fees:
Airbnb service fees - Airbnb Help Center
In particular:
"This fee is calculated from the booking subtotal (the booking subtotal includes the nightly price and any additional fees charged by the Host, but excludes the guest service fee and taxes) and is automatically deducted from the Host payout."