Mrrzy

"Qu'il fait bon" or "il fait bon" is "It's good to" as in the song "Aupres de ma blonde"'s chorus :

Auprès de ma blonde,
Qu'il fait bon, fait bon, fait bon,
Aupres de ma blonde
Qu'il fait bon dormir.

An approximate translation would be: Beside my fair haired girl (or simply my girlfriend who might be brown haired), it's so good to sleep. (Well French is more comfortable to me).

Nowdays, when French people say "Il fait bon", it generally means "The weather is warm" or "Il fait bon vivre à..." means "It's good to live in..."