"Les plages sont très belles ici."
Translation:Beaches are very nice here.
The problem is this, in my opinion. "Pretty" designates a certain physical beauty. And that seems to me what belle designates. "Nice" does not necessarily have "beauty" associated with it. A beach can be nice because it is flat. A beach can be nice because it is not rocky (like at Nice, France) but has lots of sand. A beach can be nice for many reasons, none of which have any physical beauty associated. And that is why many of us have problems with the word "nice". "Nice" is just a generic English word that means "I am OK with it." Or, "It doesn't bother me."