Since I went Airbnb, my offer to friends and relatives is always the same.
Everybody registers for Airbnb.
Everybody books through Airbnb.
And everybody pays through Airbnb.
I am up to my yin-yang with alcoholic friends and relatives. (Just lucky, I guess!)
In 50 words or less, they pay a pittance, but they are beholden to Airbnb, and not just me.
Those that DO book are frequent flyers, and it has worked out very well.