For me the first thing that comes to mind is Tales from Earthsea. I don’t think it’s excellent or anything and has plenty of problems but people act like it killed their dog. While it has its problems that have been covered extensively, I think it has a beautiful atmosphere and art.
IMO it would have been better received if it wasn’t advertised as an Earthsea adaptation and was just its own thing.
This was The Emoji Movie for my kids. I refused to watch it because of obvious reasons, but they insisted and totally liked it. I finally gave it a watch and… It was totally fine. Pleasant at times, even.