@Amy1074
The Airbnb Guest Service fee for a "long term stay" (28 nights and more) is signifcant lower then for a "short stay". In my country it caclulates around 11 % + VAT, while for "short stay" is 14% to 15 % + VAT
I noticed on your listing a similar rate for "long term'. But also saw the taxes for a 30 nights stay are almost the same amount as the Guest service Fee. And when i try to book 1 october - 30 october, i see a higher price (rent + discount + cleaning fee: $3500,-) then the $3000,- you mentioned.
But when booking for a month from first available date (today), i see a lower price (3090, including Fee 328,- and Taxes 342 makes it 3660,-
Maybe offer some more monthy discount (now 10%) ?
Hope this helps,
Emiel