The Cosmopolitan Restaurant & Hotel is a unique and fun place to eat, drink and socialize. Also a beautiful place to stay the night in Old Town San Diego State Park. DINING The new Cosmo features a full-service restaurant and bar, open 7 days a week for lunch, dinner and Sunday brunch. The menu includes American grill, seafood and Mexican-inspired dishes… burgers, steaks and pork, fresh local seafood, remarkable Mexican cuisine and a delicious assortment of seasonal desserts. You can enjoy dining in our beautiful orchard courtyard or any one of our comfortable indoor dining rooms.