Interesting enough, a little contrived. The story is good, but has the same 'don't make nature mad or it will come get you' idea as a lot of other films and parallels can be drawn with Princess Mononoke.
Very well made. Excellent considering the age of this animated feature. Did a lot to create the signature Ghibli style.
The vocal performance is very good. I particularly enjoy the performances put in by thebig name dub actors. The music fits well and adds to the films atmosphere throughout.
Good characters, go against stereotypes. No character is what you would expect from an animated feature of this age. This is one thing that Hayao Miyazaki does extremely well. You are unsure how each character will act before they are properly introduced. Also since they are not playing out over-used stereotypes, their unpredictability makes them more life like and approachable.
Very good, worth a watch. Being the first Ghibli film makes it a must see for any die hard fan, and a good place to start for those who wish to start a collection.