(E.g. claims of equity gifting to me, or under/unreported gains to him, etc.)We'll definitely be putting $50k-$100k additional into a small addition, and total rehab.

If they are good tenants as far as full and timely payments goes, I'd say: 1) Tell them you want to service their requests and that you feel uncomfortable when the husband is naked underneath a sheet.  2) If they understand your request and don't fix the problem the next time you go over, find a $50 solution that is super easy to put on and gift it to them.  

Banks require that investment loan down payments come entirely from my own savings--not from gifts or unsecured loans.

If the Tenant pays their fee, then all you have on your hands is a gift, wrapped up in a nice, pre-screened, bow.Why would you fault someone for hiring a Realtor to find them a place to live instead of scouring CL, Zillow and all of the zillion other internet sites?  

Please give her expensive gifts

Poll your tenants and ask them... offer them something like a amazon gift card for their response.

The Mobile Home Formula is no magic bullet or gift from the heavens.

I looked at it like a thank you gift.

I'm gifting it to my relative" = "What are his/her plans for the house?"

Sometimes if they are nice on the phone to you offering a gift card to their favorite restaurant is appreciated.No legal advice given.