Your best bet is to sit down and talk with an agent and discuss your needs and wants.  

I certainly can't speak for all banks, but if you insist on going small loan commercial you're likely to find the best bet at the smallest banks you can find. maybe a credit union.

We charge each guest a 10$ cleaning fee and look at that money as extra income. 

If you're considering a mentor I would try to not think about how much money they charge, do pros and cons of a few that you like (excluding $ amount), pick your favorite based on the value they bring, then factor in the money.

FYI  roof.io charges $2/tenant  (www dot roof. dot io/pricing/)

The owner would literally charge me a super low interest rate and hold the note probably no longer than a year.

What I’m looking for is an example of an “Exclusive Right to Lease” agreement for a commercial building and some guidance on how to charge (not fee specific) and maybe some tips on marketing such an animal.

Let's say a seller signs a listing contract with a traditional agent and that agent charges a 6% commission.

In exchange they will charge you a higher interest rate.Hopefully one of those 3 can work for you. 

The commission you charge yourself is one of your costs as selling as a consumer.