This same story was earlier adapted in 1956 as "The Wondrous Well" by Vladimir Degtyaryov. Personally, I like that version better. It is more true to the original story and feels more magical (though less brightly-coloured). Also, the lazy sister in it is more genuinely lazy and deserving of her punishment than in this one - in this version, she does actually try to do the work, it's just that she never learned how and so messes it up.

The characterization of Grandpa Frost in this version seems inspired by the narrator/grandpa of Leonid Nosyrev's films (many of which aren't on the site yet, unfortunately).