I have visited Harlem repeatedly with high hopes. The menu is quite appealing to me, especially the brunch which features things like grits and pancakes. Turns out that they don't have grits any more and the breakfast is just mediocre. The several times I have gone for dinner I have experienced pretty much the same level of mediocrity.
One thing that is notable is the bar downstairs which stays open late night. I suppose if you just want a drink, you will be pleased. If you want to eat, I'd avoid it.