What do other people understand by the term 'lovely people'.

It may be my aspergers, but i find this term a bit confusing....someone said to me the other day.... 'You do know some lovely people, don't you?!' i just smiled and went 'Yes!'.

But i'm not sure how people are lovely?  When i know People are too busy, stressed, got problems,in a mood, tritely possitive....so how does it make them lovely?

Anybody shed any light on what it is that makes somebody a lovely person if they're human?

Thank-You