Astrid Lindgrens story really comes to life in this anime, which is a great adaptation and manages to make fans of the book feel right at home while still managing to excite them.
If you enjoyed the book you owe it to yourself to watch this anime, it does the source material justice, and it will make you feel like a little kid again. There is so much ejoyment to be had in this anime wether you've read the book or not.
The characters are great, there are moments of joy, moments of sadness, and everything in between.
If you want to watch a good and heartwarming anime Sanzoku no Musume Ronja is a great option. You won't regret it.