It cost me $4800 to get rid of the smell (replaced all blinds, painted the whole house, air duct cleaning) while their deposit was only $2300 so they still owe me $2500. 

Do you have a boiler or forced air heat?

On the rare chance it goes sideways and the guest tries to tangle you back in with the booking platform for the guests gain or leverage, is this booking worth maybe getting banned from Air or VRBO?

Airport Air Navigation Easement will tell you you are in the flight path.

If so there could be some structural issues.I always keep my eye out for window AC units- then their either isn't central air or it isn't performing well. 

You can buy them to hang in closets, and they suck up all the moisture in the air.

@Levi GiafaglioneYou want to plan your travel accordingly.If you plan it property, the air flight, hotel, certain meals and certain local travel(Uber / Taxi) can become deductible.Be mindful that Ohio is a very unique state because many localities have their own separate filing obligations.I.E.

If you are looking to scale in a way that will allow you to use the same money over and over again and acquire more properties, you should look to get a HELOC on your house, find a hard money lender, find a fixer upper in a good air bnb location, contract everything out, use your cash to pay the hard money lender and leave your HELOC untouched for emergency reserves in case you absolutely need it (or are ready to have multiple project going on at a time.)

I have acreage with 2 homes on it and looking to add an ADU as a guest house and Air B&B.

Paul, the upper unit's furnace is in the attic, and blows air down through the ceiling.