Staying downtown for a conference and was craving fresh fruits and veggies. Constantinos is walking-distance-close from the convention center and is a relatively clean and open deli/mini grocery store. they have a lot of outdoor and indoor seating if you want to enjoy some of their pastries, coffee/teas, fresh food (including make-your-own-pizza spot at the back, hot italian food, salad bar, sushi). their grocery area is basic but sufficient - everything from pasta and beers/wine to some easy-to-eat fruits and veggies. The prices are a little higher than a typical grocery store but you're paying for the convenience, pretty decent hours (7a-10p) too