Answer:
There are NO facts about Hades, since it doesn't exist. It's only a belief of some religions are NOT going to burn in a Lake of Fire. There is no Devil, to lure you from the Path of Righteousness. It's a made-up fear.
Answer 2:
I'm sorry to say that Wickywooly has got their facts mixed up above.
The Greek god of the underworld and his kingdom, both named Hades, have nothing whatsoever to do with the Christian idea of Hell.
The questioner is asking about the Greek myth, not about Wickiwooly's or anybody else's beliefs.