Tbh, this is a solid 7/8 out of 10 for me. But since Laputa means "the whore" in Spanish and I find it pretty funny because I have the mental capacity of a five-year-old (even funnier when the Spanish dub had to constantly say "Laputa" without laughing), I'll give it a 10.
Peak comedy.
Still pretty good, though. If you aren't as biased as I am and you also love Studio Ghibli, you're definitely gonna enjoy this one.
It's a classic and a must watch for any Hayao Miyazaki fan, pretty meh in my opinion (At least compared to the rest of his movies), but still quite enjoyable.
Story: 8/10 (10 in Spanish)
Art: A solid 10/10, as expected from Studio Ghibli
Characters: 7/10
Overall: I've never laughed so hard watching a Spanish dub, ∞/10
Totally recommended, even more if you know spanish, go watch it!