I grew up with the Little Mermaid, and I remember fond memories watching it when I was a kid.
It's around the same level quality as all the rest of the live action remakes. It's ok. Just ok. Disney showing off their visual effects and lack of new story ideas. The writing in some places is not where it should be for a Disney film. The animals seem to have no expressions, even when their voices do, making this weird, flat, uncanny performance. Oh, and Awkwafina is in this too, as the same kind character she's always cast as (which is a shame cuz I'm sure she can act as more then the semi-annoying comic relief character but it keeps happening).
Some of the new songs are alright, and Ursula is done pretty well.
All overall, it's lesser then it's source material. Some of it is really well done, some of it I wanna plug my ears and shut my eyes. I don't think it's worth it. Just watch the original and spare yourself