I have one, a young traveller lady who lives with her sister and mother.
I do the windows inside and out every 4 weeks or so, and always get treated to a mug of tea, plate of biccies, chocolate bars, crisps and a sandwich.
Payment wise she doesn't always have the money on the day, but will always drop it round to my gaff within a week or so.
One of my favourite jobs actually.
John.