I guess I knew this buying the music, but really there are only a few songs from this movie that are proper to play on the piano: Victor's Piano Solo and the Theme itself.
I certainly love the Piano Solo and the Theme is nice, as well as the Duet, but the other songs appropriately sound as they do in the movie, which is fairly repetitive and lack a fluid melody.
It's good, though, if you really like the movie, which I do. So it get's a couple of novelty points for that.
Intermediate level, overall (at least that's my judgment, which may be slightly askew), so they're not boring and they're not impossible.