I provide AirDNA data to my buyers for free as their agent, so maybe find an agent that has it in your market. 

James, I tried doing this in another city which I was not a member of their mls, after signing the contract and paying the fee, there were a lot of additional charges, like they wanted me to pay for the lockbox and shipping fee, I had to take the lockbox to the property, in the contract they said they will post 15 pictures, but they wanted me to provide pictures they would just upload it.I'm just trying to say double check and make sure what is included and what is not, if you are in town, it will be a lot easier but for my case, I didn't want to drive few hours to run their errands.

I always recommend to my clients keeping if possible because passive cash flow is never a bad thing and you can leverage equity down the road if you need a little extra.

“Because of this investment, more Alabamians can provide a better living for their families, and it helps cement Alabama as the preferred destination for the aerospace industry."

Quote from @Nilusha Jayasinghe: I provide scanned copies of all receipts to my owners.

Does AirDNA also provide with those insights? 

Tenants provided their own window units.

It was built in the 60s but just got a new roof, HVAC and water heaters were all updated between 2017-2018 so fairly new, and it’s an active mid-term rental making about $3,200-3,600/month depending on the season and he provided all the documents to support that from the past 1.5 years.

While you can supply important information to the appraiser, such as recent improvements or distinguishing features, they must ultimately provide an impartial market valuation.

It may sound nice to pay a 6% management fee but the extra fees can add up to be more than the other company that charges 10% with no additional fees.