Harvard is one of the most overrated places on planet earth. The challenge is getting in, once you are in it's no better nor worse than peer institutions. Plenty of mediocre grade grubbers manage to get accepted to that place and I've worked with some.
Frankly, the getting in is less about being intelligent than it is about having a way to stand out. Whether it is having famous/ wealthy parents(Being famous yourself) being a legacy or in some select cases, having a compelling background story, the key is to get in. Once you are in, the coursework isn't significantly different than what you'd get at UMiami or any other private liberal arts school.
As a Yale alum, I'm trained to hate Harvard, so I'm not biased
All that said, Harvard is an outstanding institution. It deserves 100% of its accolades, although I will note: the undergraduate "experience" is not as great as the graduate school experience. A general rule, but it's mostly accepted to be true.