I typically send all three. I send the link for the driving directions, I send my own summary which makes sense to local people, and a screenshot of a map, with my scribbles on there. "There's this landmark, here's where you turn, this is Xyz Lane which you'll see on your left just before the street you turn into, so be ready when you see it, here's our house on the left. If you're coming from the south instead of west, this is where you'll be coming from." As far as I know, no one's ever gotten lost this way.