Mariscos “El Costeño”Restaurante & Bar is located in Romeoville, specializing in Mexican food with a Seafood Twist. We have Karaoke every Friday & Sunday and Live Music every Saturday night. Serving Lunch, Dinner, & Cocktails 7 days a week. Gio’s Restaurant is located inside Mariscos “El Costeño”Restaurante & Bar and serves Breakfast and Lunch daily. Looking to have your next event catered or have a private event here? We can accommodate any size party for your showers, rehearsal dinners, birthday parties, holiday parties or any special event.