It's his fault it needs doing because of the mildew from his ridiculously long showers. The paint's also started to peel on the ceiling, so it needs sanding properly.
He's got all the equipment he needs and detailed instructions.
What will I come back to?
He's 20yo and between jobs. He has one lined up to start in a week. Would you pay him and if so, how much?
It's just the ceiling and door frame. Everything else is tiled.