Restaurants achieve notoriety for its food, service or because they are fashionable. Keep these three items over time is more difficult then to improve quality and service. Many fall by the wayside because they have ceased to be fashionable, which is often, or due to the decrease on quality - food and service - , but those who welcome us with good food and service, remain. I returned to Rio's after three years of my last visit, with two friends with whom I meet for lunch and have a good get-together on the things of life: Health, taxes and how to pay less, politics, etc. After this time the spot continues to maintain quality, and even improved the service level. I believe that this is its current standard and due to my good faith, not because of the room practically empty. The red shrimp curry was awesome as well as the crème brulé on the top of red fruits, notwithstanding its scarcity. It was a beautiful day which in this restaurant is a plus, since you can enjoy great views from their windows on the mouth of the Tejo River.