We loved this spot and actually visited twice when we were in Paris. Great food and long list of bottle and draft Belgian beers. We had a nice snack the 2nd time we were there (photos above). Close to the Chatelet Metro station and a short walk to the Notre Dame Cathedral. It is located on Rue St. Denis. If you walk away from the Seine on Rue St. Denis, you will find lots of great restaurants and bars. We also found a nice Christmas market. I couldn’t find a working website but did find out more info on Yelp. Here is the link: https://www.yelp.com/biz/au-trappiste-paris