Buena Onda Cà Phê, located at 36 Rue Keller, opened its doors in June 2024, bringing a taste of Vietnam and Argentina to the 11th arrondissement. Espresso-based drinks are crafted using a Cimbali machine, featuring beans sourced from Hanoï Corner and L'Arbre à Café. The café offers a variety of beverages, including espresso and flat white, alongside plant-based milk alternatives and a selection of sweet and savory treats. Open from Monday to Friday with indoor and outdoor seating options, it’s a great spot for a leisurely coffee break or a productive afternoon, complete with free Wi-Fi.