I am a realtor in Durham and would be happy to discuss if you end up this way

We have several people who have requested the application but i am struggling with the fact that despite paying the application fee they may not be choosen. 

But it is the excessive side fees that I can never get full monthly rent.

But you acting as a transactional agent/broker making a fee its not about that as much as downside if your seller gets hammered.

Preferably with low fees?

- upping your max # of guests somehow- "no cleaning fee" & upping the nightly rate accordingly CAN be a big driver of bookings in some markets- having your listing/pics done professionally (by someone who specializes in STRs)- a great outdoor area- if you wanna spend $, i'm seeing lots of people adding pickle ball courts & more stuff to do outside like that - having a car there that they can rent on turo for cheaper than the rental cars from the airport

Know you could always to a guaranteed payment / consulting fee, but think he prefers having some sort of interest.Any thoughts about what is fair. would be appreciated.  

Different agents will work for different fees and I am sure if you offer to pay them more per deal, they will work harder for you. 

With all that said after closing costs, origination / underwriting fees, etc. if seem very difficult to get things moving along.

It may be helpful to consult with a lender or real estate professional to discuss your options and develop a plan that aligns with your objectives.