The on-campus restaurant for students is called Mensa, and is located in the Mensa building, right in front of UZA 1's main entrance. It is a cafeteria offering copious menues at reasonable prices.
Close to the WU campus there are a number of different restaurants and cafés, for example:
Universitätssportinstitut Wien (USI) offers a wide range of courses for students at very affordable prices. Please visit their website for further information (some content can be accessed in English).
In addition, Unisport offers WU students affordable and attractive possibilities for sports activities (for example squash, tennis, fitness): www.unisport.at
If you are interested in going to a gym in Vienna, here are a few websites:
Please ask for student discounts.