When something is nice, it is pleasant but never too much. Your life won't change as a result. When something is good, we mean the goodness is inherent (fundamental).

when talking about a person nice - means friendly good - they have good morals, they follow the rules, help others when talking about a thing nice - it means you like the thing, good looking "ex: the house is nice" good - it means you approve or possibly of good quality. suitable.

If something is nice, it feels good.