Presentation, I guess? That falls in editing.
I see a lot of web novels where the Author obviously hasn't done any editing,
and I wonder why. Even if your English isn't very good, a simple editing program
can fix some of the main problems. Or have another set of eyes take a look.
I'm sorry, but I will not read a chapter where there is not even a single punctuation,
where the capital is either all uppercase or lowercase, and when every other word
is spelled wrong.
I won't even take a second glance at a novel where the title doesn't have proper
capitalization or spelling (unless the spelling and capitalization is intentional)
Lack of a proper summary. No idea what the story is about, so why bother trying it?
As for, 'What makes a story good?' in general, I think that really differs between a reader's preference.
Besides good presentation, I look for specific genres and see if the plot is interesting.
Lack of unique tropes, non-perfect grammar and all, I can forgive, but there are 2 things that are insta turn-off for me: Betas and bad tenses. Jesus lads, either use present tense, or even better, past tenses. NEVER USE BOTH!
Unfortunately, I'm bad at that. I tend to switch between present and past tense.
I've never been able to fix that. Though I try to fix it when I can....