It's better than Chef Boy-ar-dee, and better than your local Pizza place, but still nothing to write home about, IMO. I think we enjoyed the Sci Fi Dine In better for atmosphere. Plus Sci Fi was very popular with the kids.
Then again, for dining at DHS you don't have many good places to choose from, in my experience. We were underwhelmed by the 50s Prime Time (OK, but no reason to go back), thought Hollywood & Vine was just horrid, Pizza Planet even worse. Other than the Brown Derby, which is great but pricy, I'd go Sci Fi then Mama Melrose in my rankings. Maybe we should give 50s Prime Time another shot but DW just hates the "waiters in your face" thing.
There are lots of restaurants we love in WDW; just very few at DHS. JMO, YMMV