Honestly, what can I say about this show that hasn't already been said? It's AWESOME! Fluid and colorful animation, hilarious writing, lovable characters, impressive acting, and an adult centered animation that doesn't feel the need to be as topical as possible. It does have vulgar moments, but...it's HELL. No duh. There's also enough interesting lore to keep you invested, and wanting more. The team really put their all into this, and it shows. On one hand, I hope this becomes more than just a pilot, and becomes a full series, but on the other hand, I wouldn't want TV networks, and to a lesser extent streaming services like Netflix to get ahold of it. Part of what makes Hazbin Hotel so fantastic is because the team has complete creative control over the project without having to listen to networks. Not to mention a lot of the jokes wouldn't have the same punch if they had to be censored by networks.
Overall, I highly recommend Hazbin Hotel for any adult who wants to have a fun time. It's definitely good for animation junkies as well.