Proximity to Major Northeastern CitiesBuffalo’s location near major urban centers like New York City and Boston makes it an attractive alternative for buyers seeking more affordable housing without sacrificing access to urban amenities.5.

I do it manually (and keep in mind, it also depends on the state and location - VRBO does for some and not for others, Airbnb does for some and not for others) I know many folks happy with Avalara though. 

This generally means Sub To, or raising credit card debt capacity through the roof with teaser rates to buy D located BRRRR Properties liabilities   Both of which are terrible propositions for an investor who has limited knowledge and expertise. 

Focus on buying properties in good locations that will attract high value tenants.

I'm an investor and realtor located in the area and happy to chat ideas & strategies and see how I can help. 

Sadly, it seems that cash flow on long term rentals with 20% down just does not exist in most desirable locations.

I am not sure where you are located, but I'd encourage you to call around to PM's & you may find one willing to help you.

I currently operate a few STRs so have a good understanding of that aspect although they're all located in touristy locations.

In those days it was possible to locate and tie up a “killer” deal, and close the transaction with absolutely zero of the investors own money.

Firstly, it often generates higher rental income compared to long-term leases, particularly in desirable locations or during peak seasons.