Saarbruecken offers many hotels and hostels in all categories.
Hotel Ibis
(50 meters. Single room: 44€)
Europa Hotel
(250 meters. Single room: 49€)
Mercure Hotel
(800 meters. Single room: 80€)
Hotel zur Klause
(900 meters from the venue. Single room: 43€)
Hotel Stadt Hamburg
(900 meters. Single room: 63€)
Motel one
(1000 meters. Single room: 79€)
Hotel Madeleine
(1100 meters. Single room: 65€)
Hotel Fuchs
(1100 meters. Single room: 82€)
Hotel Crystal
(1300 meters. Single room: 69€)
„Nauwieser Apartements“ (1500 meters. Single room: 62€)
If you need or wish a free place to stay for the duration of the conference, check this: Couchsurfing.com