I've never eaten at a restaurant on YELP with over 5,000 reviews. I know I can't add much to what has already been said but my son and I found this restaurant so good we ate here three times in a short two day stay in Vegas- it was in our hotel, the Paris, and it was great every time we ate here. Service was always excellent, our most exceptional server was Tracy at breakfast. I doubt that you would find service as good or friendly in a real French restaurant in Paris.
French restaurants I've found have always been a little too much on the pretentious side for my taste but this one really serves some exceptional fare with a distinct French twist. The Croque Madame for breakfast was really good. The fries were always exceptional, for breakfast and with steaks at night. The French Onion soup was really well done. The scallop appetizer done au gratin was one of the best scallop dishes I've ever tasted. The restaurant has a warm and very comfortable bistro feel to it and I would recommend it highly.
The patio outside has a million dollar view of the Bellagio water show across the street so there is usually a wait for tables outside. We never experienced any major delay in seating for an inside table.