Original title (FR): Les femmes au balcon (The Women on the Balcony)

As a heat wave brings a Marseille neighbourhood to the boil, three roommates (Souheila Yacoub, Sanda Codreanu and Noémie Merlant) gleefully meddle in the lives of their neighbours (Lucas Bravo) from their balcony. Until a late night drink turns into a bloody affair.

https://www.themoviedb.org/movie/1112466-les-femmes-au-balcon