The St. Regis Bar is a luxury lounge on the 12th floor of the St. Regis Osaka hotel, offering refined cocktails and live jazz performances in an elegantly appointed setting. The bar's décor draws inspiration from Japan's Azuchi-Momoyama period, featuring rich-blue leather panels, corniced silver-plated ceilings, and sumptuous leather-bound chairs accessible through a distinctive walnut entrance door. The signature Shogun Mary cocktail combines vodka, dry gin, and tomato juice with distinctly Japanese elements including yuzu, soy sauce, and wasabi. The venue hosts diverse jazz musicians, from house vocalist Riko Shimatani to invited piano, bass, and saxophone players. Service includes afternoon tea from 12 PM to 5:30 PM and cocktails from 5:30 PM, with extended hours on weekends and holidays. The combination of sophisticated design, curated spirits selection, and live entertainment creates an upscale destination for discerning guests.