The Studentenwerk Niederbayern/Oberpfalz is the equivalent of a student union and will help you with general information about studying. You can get information on university catering (Mensa, cafeteria), educational support, social counselling or student housing.
Here are the links for the services:
Studentenwerk Niederbayern/Oberpfalz
Albertus-Magnus-Strasse 4 - Studentenhaus
93053 Regensburg
Germany
Deggendorf Office
Dieter-Görlitz-Platz 1, F 101
94469 Deggendorf
Germany
Phone: 0049 991 3615-601 and 0049 991 3615-602