Simplify the following text for a Grade 8 native English-speaking person.
Original: Arromanches-les-Bains ( or , simply Arromanches ) is a commune in the Calvados department in the Basse-Normandie region in north-western France .
Simplified: Arromanches-les-Bains is a commune . It is found in the region Basse-Normandie in the Calvados department in the northwest of France .