The Refinery is one of several restaurants and bars tucked away in a cozy courtyard off Hai Ba Trung just a few steps from the city center, and makes a relaxing spot for lunch while sightseeing or a leisurely dinner. The site on which the bistro stands was once an opium refinery, which gave it the name, and there's a choice of eating indoors with a typical bistro atmosphere (tiled floors, marble-topped bar, and specials chalked on a blackboard) or on a terrace surrounded by plants. For a light lunch, go for the salad Nicoise, or for something more filling, try the steak, roast potato, and parmesan cheese salad. There's also a decent range of wines on offer.