My partner and I had dinner at Le Dahu during a stay of a few days in Lille as part of a longer trip. We both really enjoyed our meals and felt satisfied with what chose. He had a steak, which was excellent (he said...it was in the top steaks he has ever eaten). I had the raclette, which was a new and fun (and tasty) experience. Our server was kind and patient in helping my partner decide on what to order since, not being French, we were unfamiliar with many of the menu items. The only downside to the meal is that it was a bit pricey for us since we were on a pretty tight budget. However, we decided to eat in for several meals so that we could have a nice meal out on our last night, and we feel that Le Dahu was worth it. In terms of Lille more generally, restaurants seem pricey (at least compared to what we are used to), with main courses ranging from euro or more, and so this restaurant is in line with that trend. We would recommend trying it if you are looking for an authentically French meal in an intimate setting