Napa Rose is amazing. My wife and I went to the lounge for dinner during our anniversary trip. Service, food, and atmosphere were great. Here was my review from our trip in early September:
Napa Rose (at Grand Californian Hotel) - Where Blue Bayou wins in ambiance, Napa Rose sits above all in food quality. Hands down, the best restaurant in DLR - no other holds a candle to it among all DL, DCA, or Downtown Disney restaurants. Try the diver scallops to start, melts in your mouth. I had the pork chop, was a great flavor profile topped with peaches and a black bean & bacon base. My wife had the filet (requested medium rare finish), again, melts in your mouth. Ask for the Lasseter Winery Rose - John Lasseter's family owns vineyards and they distribute their wine to Disney resorts only, not sold in stores! Very cool and unique thing to try, keep the cork as a keepsake! Best dessert on the menu is the smore, blew my mind! MUST TRY. Expensive (more than Blue Bayou), but if you're willing or able to do one big dinner out, go to Napa Rose. The bar lounge has a better ambiance than the dining room, so sit there - first come, first served.