Max:
Lots of good players automatically identify the "best" hole on a course as the toughest par-4, so that's a start.
To me, a truly great hole has to reward great play and not just good play ... and the only way to reward great play is a stroke at a time. That's why everyone likes what are called "half-par" holes on this board, whether they dole out a large number of birdies and pars, or pars and bogeys. But, I don't think great holes have to dole out double bogeys.
Other great, easy holes for me:
#13 at North Berwick
#12 at St. Andrews
the Dell at Lahinch (I guess it's #5 now, I still want to call it #6)