This really starts off well, with our hero high-schooler dude working at a cafe and having to deal with jerky out-of-towners hunting aliens. We really get a sense of the characters, with some humor. And the writing is obviously good from the start.
This is definitely a YA novel. Throughout you have young people dealing with each other, worrying about their place in the world, having to deal with parents and school, etc.
Our hero's final big decision is something I predicted to myself and wanted, and I think it was probably the only intelligent solution for our character and the author. I'd be surprised if anyone was surprised by it.
But this is an enjoyable read. We never really know why there's this bit of magic in this town, but I guess it's your classic maguffin.