Fr. Matteo is fine family fare and always has a moral or two to make one think. I do enjoy all of the characters, but I would not recommend binge watching more than one season at a time. It is more enjoyable to come to it fresh.
One huge distraction -- or, rather, attraction, perhaps -- is watching Mr. Hill's hairline recede. It would not even have entered my mind, except in the first episode, the Bishop tells him that he is too good-looking and implies that if, among other things, he were bald, he would be less of a temptation to women.
Each episode, it becomes more and more obvious that his hair is "thinning"; and each episode, the makeup folks try other ways to conceal that fact. A fun pastime in itself! Plus, the camera folks zoom in and take off the top of heads, so that we see less and less of Fr. Matteo's less-and-less. Perhaps related to this issue, Mr. Hill's character has less of a role to play and the feuding officers become more prominent. That is a bit of a shock, and sad, because the show is supposed to be about Don Matteo.
