I've always liked her writing...and I like this movie. She's witty and I enjoyed hearing Scorsese laugh. It's clear these two have great camaraderie.
I also liked the editing, music etc..
My only negative comment is the fact that Ms. Lebowitz, like all Jersey girls, has the habit of saying "you know" at least once in a sentence. It's distracting, you know?
I share the same trait and a similar birth locale..Philly. I've been trying to rid myself of this habit. Now I will remember to try harder.