He was happy he was getting a good steady rent check and know his property was well taken care of, and I was happy I was able to Airbnb with less expenses than had we owned the place. 

Most standard MLS contracts now include a box check for 1031 exchanges. 

Let's check the Regulations 1.21-1 which clarify Section 21.

This is what I have been advised so best to also check. 

Double check any cap ex you might have coming in the next year or more there so you can plan to set that aside (boilers, roofs, etc).

I know that my *least profitable* "door" right now nets $518.51 every month (I just checked), and that's a number I'm satisfied with relative to the amount of work I'd have to do to improve it, and I'd hazard most people who are door collectors aren't making anywhere near that kind of money on probably their best units.  

I believe Airbnb and Vrbo dont do credit checks is this right?

If you want to talk to a good agent out in that area I would reach out to Jen Day @Jen DayI would also check facebook marketplace in case someone is looking to sell and just throwing it up to see if they get any traction. 

Check if your general contractor has W2 employees and has worker’s compensation.

Check for cracks in the foundation, condition of the mechanicals, any water coming into the basement, etc.