I live in a 55+ mobile home park and the guy who does odd jobs for folks and is always around I pay $20/wk to stop in and check the cats. He is welcome to sit down, take a nap in my recliner with the cat(s) on his lap, or even raid my fridge if it somehow has any food in it. I have an automatic litter box that you should just have to open a drawer and change out the bag, but between the cats and him it usually isn't working by the time I get back and he is hand scooping the litter each day. I have food and water containers that shouldn't need any attention if I'm gone only 3 days (which is what it usually is), but with my cats anything is possible so I appreciate him stepping in making sure they haven't knocked over the water or anything on the first day out and might have issues before I get back.
When I told him $20/week and asked if it was ok, he said no. He said it was too much because he loves my cats. They love him, too, as I can tell when he stopps by when I get home. I told him 'tough, you're getting $20.'