Le Relais de l'Entrecôte is a real time commitment — fit it in only if it's a priority.
Allow 1–1.5 hours incl. queue.
You sit, you state your doneness, and out comes a walnut-leaf salad, then sliced steak-frites under the famous green sauce — and the kitchen comes back with a hot second serving. Brilliantly simple and great value, but no reservations and queues are the norm, and the whole thing rests on whether that herb-and-butter sauce (its recipe a closely guarded secret often pegged to thyme, herbs and a touch of chicken liver) works for you — the people it doesn't land for find the meal monotonous by the second plate.