The Naschmarkt market is the most famous Viennese market. You can fin stalls, bars and restaurants, selling drinks, meals, spices, fruits and vegetables from dawn till dusk.
The Deli is one of the early Naschmarkt pionneer, and a trendy place for young people in Vienna. The food is delicious (I tried cornflakes chicken schnitzel and watermelon cocktail) and the sunbath on the terrace very pleasant. If you go there during the weekend, DJs play music.