Trendy Restaurants for Students in Vienna

Vienna features an extremely wide variety of pubs and restaurants, from very basic budget eateries to posh and extremely upscale places.
Although its by far not possible to cover the whole segment, we tried to showcase at least a couple of student places here:

Tunnel

Nestled in the mainly residential 8th district, the Tunnel offers breakfast, snacks and full meals at unbeatable prices in a relaxed multicultural student atmosphere. Downstairs venue with daily live performances (cover charge may apply).
where: 1080, Florianigasse 39
when: daily 09h00-02h00

Kolar

The Kolar, a hideout in a small side street in the city center, specializes in Fladen, probably best described as pizza calzone-like flat cakes from the stone oven, filled with a seemingly endless variety of ingredients. Try the special Kolar Pils!
where: 1010, Kleeblattgasse 5 (off Tuchlauben)
when: daily 11h00 till late

Selbstverstaendlich

Frequented mostly be students from the nearby Wirtschaftsuni, the Selbstverstaendlich features breakfast, baguettes, salads and typical Austrian meals. You should go for the chefs speciality Nockerln(dumplings with different trimmings)! 
where: 1090, Augasse 25 (U6 Waehringer Strasse)
when: daily 09h00-01h00

Nelson

Head off to Nelsons if you want to make sure you meet Austrian students, as this place lies directly in one of the inner courtyards of TU Wien (2.Hof). Reasonably priced quality food – burgers, wraps, salads and all-day breakfast. Nice terrace! 
where: 1040, Paniglgasse 14 (U Karlsplatz)
when: Mon-Fri 08h00-24h00, parties on weekend

Cafe Benno

Are you in for a round of board games, enjoying relaxed drinks while playing? Then Cafe Benno right off Hernalser Guertel definitely is the place to be. Try the famous baguettes (they come even taylor-made with your favourite trimmings)!
where: 1080, Alser Strasse 67 (U6 Alser Strasse)
when: daily 16h30-02h00 (Sun-24h00)