In Germany, you can expect university and research housing (typically dorms arranged through the host's international office or local Studentenwerk) or shared apartments (many students and young adults live in shared flats, known as Wohngemeinschaften, or WGs). To find housing, ask your host if there are any available sublets through the company or group members and browse online postings.
How much?
Students can spend anywhere from €250-€600 for rent. Check out a student budget for Germany to look at costs for housing, food, transportation and additional items.
Jugendherberge
Germany has an extensive youth hostel network. These are true youth hostels and are safe and inexpensive. It's a great option if you want to find a WG in person when you arrive.
Schwarzes Brett
Universities have a tradition called the “Schwarzes Brett” – i.e. online bulletin boards. If you arrive in Germany without an apartment, you can visit the University cafeteria (Mensa) and explore the postings; this is the original “Schwarzes Brett.”