Visually peak. But no more. Ufotable did and still doing a very great job, but... That's all, the plot is very templated, very «shōnened». If you like happy-ending — go on. Otherwise, it's not interesting for watch.
Great anime, tbh. It's peak. One of the best Slice of Lifes anime, the emotions and worrying of each characters shared wonderful. And the adaptation very good, changing an art style every 5 second is really wild.
Peak. Just peak. Don't listen to other's opinion, they just didn't understand the anime. If you an understanding and deep viewer, you would totally understand it and realize, that this is peak.