CHICAGO — Egg Harbor Café has opened at Optima Signature, a 47-story, 490-unit luxury apartment tower in Chicago’s Streeterville neighborhood. The Streeterville location is the first downtown Chicago restaurant for Egg Harbor Café, which specializes in breakfast, brunch and lunch and maintains 20 locations in Illinois, Wisconsin and Georgia. Optima Inc. is the developer behind Optima Signature, which features 60,000 square feet of retail and office space. Egg Harbor occupies 4,905 square feet. There is one 490-square-foot retail space remaining at the apartment property, which opened in 2017. Other retailers include GoodVets, Guidepost Montessori, Runaway Fitness and Bedazzled Nails & Spa.