Napa River Grill Southwestern  style restaurant, Located at: 3938 Dupont Circle Louisville, KENTUCKY   Phone Number 502-893-0141           Hours of Business: M-Th 5-10:30, F-Sat 5-11:30, Sun 5-10           Average Price: $20                   The Napa River Grill is in an unlikely location for a fashionable restaurant: The street it is on has evolved over the years into a suburban medical center, rather than a restaurant row. But with an award-winning wine list and imaginative cuisine, it's well worth seeking out, especially as spring has arrived and you can dine on the vine-covered, walled patio.