If you're a romance, webtoon, manhua/manhwa fanatic, I would certainly recommend you to try this, it's entertaining and not a waste of time at all!
It's cliché but not in a bad way and not too much or overbearing. It's a really cute story and the characters are really likeable! Our protagonist is indeed very dense but mostly because her mind is just trying to think of ways to prevent herself from meeting her 'doom'. One thing I NEED to have when I watch romance anime's is to like the main lead otherwise I'd find it hard to enjoy the show; this anime passed that criteria!
She has a barbaric and loud behaviour which is deemed unfit for a person of nobility, but does she care? Not even a little bit xD She's moreover a really kind and caring person and is funny too. In many harem animes, I've always wondered how the boring protagonist ALWAYS gets so many characters to fall in love with them when they're literally so boring. But in Reborn as a Villainess, we can clearly see how the characters fell for the main lead's charm.