The Bar/Lounge at MGM Grand Detroit
The bar/lounge at MGM Grand Detroit is acknowledged by professional travelers. Out of 4 reviews that we tracked, 2 acknowledged the bar/lounge, including Forbes Travel Guide and Gayot.
MGM Grand Detroit 
Forbes Travel Guide
Gayot
Forbes Travel Guide "Another plan: Stop off at Ignite Sushi Bar & Lounge for an MGM Grand Roll (crab salad, shrimp tempura, avocado, tempura crunch, tobiko and eel sauce) or some cognac and follow it up with a night of dancing at the luxury hotel’s V Nightclub"
Gayot "For an extra fee, hotel guests can access the concierge level and its full-service lounge"
