What kind of charm do we enjoy at home?

The relevant lines in the song "Home, Sweet Home" are as follows:

A charm from the sky seems to hallow us there,Which, seek through the world, is ne'er met with elsewhere.

The home is presented in the song in idealized, sentimental terms. It's a hallowed place, a place of inexhaustible warmth, security, and comfort. If something is hallowed, that means it's been made holy. And in writing the lyrics to the song, Payne presents the home as not just a nice place to live, but as something holy, given to us by the Lord himself. That explains his reference to "a charm from the sky." Home and all its joys seem to come from the sky, from heaven. And this heavenly charm is so special that it cannot be found anywhere else in the world. The home, due to its divine, heavenly origins, provides a haven of peace from the troubles of the world. Though in the world, the home is not of the world; in other words, it's a little piece of heaven on earth.
https://www.balladofamerica.org/home-sweet-home/