I read Zorro after watching many movie adaptations of it and I have to say that all of them were more of fanfictions than adaptations, hahaha!

As about the book:
It was an adventurous book that made me laugh a lot and made me feel nostalgic for some reason. After work, it was quite relaxing and I would gladly read it again.

Diego made me laugh a lot—and I have to say that these tubulent times now remain as such and even more so than in his era—as did Sergeant Gonzales with his meal mush and goat's milk!

Generally:
You'll find funny (probably) that the most accurate adaptations, as about the characters, are actually a couple of cartoons I watched as a kid, while the setting and situation was closer to the live action adaptation!