The whole experience? This is the TOP 100 golf courses. Not top 100 golf experience's.
Therefore it's surely about the golf course, not the marble floor and walnut paneling or the luxurious shower room.
I'm inclined to disagree. When I arrive at a club I'd expect at least the common courtesies, and when I've finished playing I'd like to think there's a decent welcome in the clubhouse. Would a poor experience stop me revisiting? It has done. There's more than enough very good courses out there to not have to revisit places that don't make you feel welcome.
However, in terms of marking a visit, I'd expect that a large percentage of the score to come from how good or bad the course is. I'd hope that the comments associated with a review would at least say that the overall experience, including pro shop and clubhouse staff were good/poor.