I hear the phrase user-friendly often nowadays. Somewhat different meaning, but perhaps it explains why "friendly" is occasionally being applied to things. It still sounds weird to me to describe a thing as friendly, but time will tell whether it becomes established in English.
A person can be sympa, meaning friendly, kind.
Un menu sympa is original, creative, mouth-watering.
Une robe sympa is stylish, well-cut, fashionable.
The problem with "sympa" (= sympathique) is that people use it at anytime for anything, for lack of a more accurate vocabulary.