I would avoid all of the algorithms simply because they are just 'guessing; in a sense.For most properties, you can just go on your preferred website like Zillow/Redfin/Realtor.com and just look around for properties that are extremely similar to yours.

That way when the busy season returns, you will have an established listing that will rank higher on airbnb's algorithm.

The algorithm can only pull what it can find and it isn't perfect.

A lot of these places cashflow more like LTRs at this point but you've got the STR risk due to seasonality, computer algorithms ranking your profile, self management, cost etc. 

So, they use the data they have access to along with some algorithms to give it's users numbers that are 99% accurate or better.

They are a computer algorithm.

I started following tons of people in the real estate space and training the algorithm to show me more real estate content.

They really kind of irked me back in the summer;  Akron passed a source of income law and I tried to rent to a very nice lady with a voucher but they won't tell you up front their algorithm for determining "rent reasonableness" and they deemed me unreasonable for the market after d*cking around for 2 weeks. 

And, frankly, many owners are really suffering under changes within Airbnb to their algorithms, customer service, etc which is causing them to migrate away from Airbnb.

I think computer algorithms are useful for researching markets, but you should do your own research to see how a specific home will perform.The biggest red flag for me is that you're buying a $475,000 property that still needs renovations and you're going to fund those renovations with credit cards.