For everyone finding this thread and all of the above "advice"...
BNBsync.io - NO
On the surface: good price, no auto-sync, only csv import from airbnb.
BUT no online signup!, you have to fill out a contact form to signup, and guess what... the contact form doesn't even work! No way is a company actually in business that can't get a contact form to work. Zero leads means zero customers. BEWARE! telltale signs of a 1-person software project.
domasoft.io - NO
Free? Pretty landing page? signup works but linking airbnb account errors out. Tried 5 times.
No help page and no contact!, 100 followers on facebook, no posts since 2020, phone number on facebook just rings. BEWARE! telltale signs of a 1-person software project.
Tenantcloud - NO
Does not seem targeted to Airbnb at all. Looks like a rental property manager, no airbnb integrations. Didn't sign up, didn't at all look like what an owner needs.
Mysoftinn - NO
Does not seem targeted to Airbnb at all. Looks like an all in one for hotels, no airbnb integrations. Didn't sign up, didn't at all look like what an owner needs.
BNBtally - ok, for now
Looks legit, tons of support and setup videos, fully automated. I like they work with Quickbooks and Xero. But the price is steep for a single unit owner, $32 for 2 properties with no price break for 1 property is insulting and a little shortsighted. bnbtally + Quickbooks = $46 per month
For now, the only real option I can find it BNBtally + quickbooks or xero. Let me know if I have missed anything or if I am wrong!