I think it's an average movie overall. The animation quality is solid as expected, but there's not much that stands out other than that.
Story:
A girl (Shizuku), who enjoys reading, notices the same name in the checkout slips of all the books she checks out. She eventually meets him, admires his talents, and then aspires to be someone who's abilities can match up. I thought it was cool see an example of a mutually beneficial relationship where people inspire growth in one another. The ending was predictable (and cheesy), but It works fine for this story. I think my main issues with the story that it took to long to get going, and that the setting was generic and forgettable..
Character:
I think Shizuku was too basic considering how much of the movie is focused on her. She's very much just an average high school with a strong interest reading/writing. Seiji could be considered the other main character, but he lacked presence due to story-related issues. Attempts were made to create some development and drama among Shizuku's friend group, but the characters involved had so little screentime that those scenes ended up feeling unnecessary.
Enjoyment:
I got some enjoyment out of the movie's easiness to follow, and its animation quality. Like many other Ghibli films, there's a focus on coming-of-age themes, so I'd imagine you'll like if you're a Ghibli fan.
