This review is only for the first 8 seasons of the series. Because I heard a lot about how bad the last seasons were, I didn't even get to the point of starting watching them.
The writing: Good. Nothing special, but it's good: it has good jokes and the structure of the story is also good.
The acting: Very good from every actor! But in my opinion, mostly Charlie Sheen and Jon Cryer bring out their best.
The direction: Let's call it good. But that's just "good" too, nothing special. I think this is as good as a series like this can get.
So in summary: the first 8 seasons are good. They have funny jokes, great acting and good direction.
The writing: Good. Nothing special, but it's good: it has good jokes and the structure of the story is also good.
The acting: Very good from every actor! But in my opinion, mostly Charlie Sheen and Jon Cryer bring out their best.
The direction: Let's call it good. But that's just "good" too, nothing special. I think this is as good as a series like this can get.
So in summary: the first 8 seasons are good. They have funny jokes, great acting and good direction.