 If you liked
Alps no Shoujo Heidi
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 ...then you might like
Sougen no Shoujo Laura
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The good old true and purest Slice of Life.
Similar in aesthetics and character design, being from the same studio and the same decade. Heidi and Laura are two extremely cheerful and charismatic characters that it's hard not to like them both.
Both animes are enjoyable, and as I said before: the purest Slife of Life. Both are the pioneers of Iyashikei.