Pretty much exactly as described, I love hibiscus tea, so this did it for me too. Not overtly sweet and has the right tinge of tartness at the finish. I never forgot it was beer, either, which was nice.
Has a sweet-spicy scent like some sort of berry. A good mix of fruit and bitterness.
It would be good, except that it tastes a little fake, like the flavoring is artificial, like something that would be added to a medicine.
I don't know what it is, but it certainly drops my rating.