I would give the food a rating of 5 as our mussels Ardennaise were really delicious and the portions were very generous, however the service seriously lets the restaurant down. We ate lunch on the small, outside terrace area and the lady who was running the waiters in this area was extremely unfriendly and appeared to look through us several times when we were trying to attract her attention. The inside restaurant is quite large, so we enjoyed the more intimate outside area. Although the service wasn't great, we were on holiday, so enjoyed relaxing with some wine and soaking up the atmosphere of being on the Champs-Elysées. We didn't feel rushed to vacate the table after we had finished our meal.
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