Travelled to Paris with my boss last week and looked in advance for a restaurant near our hotel to have a late dinner (we sat down after 10pm). I am not very familiar with Paris, all I can say it is 10 minutes away from the Palis de Congres by taxi. The location is cosy, not loud at all, and the owners are Japanese. Quality of food is extremely good. You might say the wait may be a little long but it is surely worth it. I am happy I have tried this restaurant and will definitely go back on my next visit!