@Elizabeth90 did your host really cancel it, or did the host tell you to cancel the reservation? If your host cancels it, you are entitled to a full refund of the service fees. You can find out more here
From the site
Guest service fee
We add a percentage-based service fee to guest payments every time a reservation is booked. This helps cover the cost of running our site and services.
The exact percentage depends on the subtotal of the reservation. The higher the subtotal, the lower the percentage so you can save money when booking large reservations. You'll see the exact amount in the price breakdown on the checkout page before you confirm and pay, and on your billing receipt.
If you cancel a reservation you booked as a guest, the service fee is non-refundable. If your reservation is canceled by the host and you choose to be refunded, the service fee is refunded in full.