You can choose to stay directly at the conference location, in the Haus der Jugend.
Rates for the full conference are:
- 2 person room : 120 €
- 4 person room : 100 €
- 8-12 person room : 80 €
This price includes breakfast and accommodation for four nights.
There are around 300 places. Speakers and members of the organisation team get priority.
Accommodation outside 
Other Youth hostels 
Nearby Hotels 
- The Steigenberger Hotel (4 stars, in the city center, rooms for 90 Euros/night)
- The Royal and Primus hotels, 200 and 800 meters from the Hau der Jugend. 3 stars, 55 Euros/night.
- The Hotel Am Berg. Small hotel with 21 rooms. It is located in Sachsenhausen, near U/S Südbahnhof and close to the Haus der Jugend (approximately 10-15 minutes walk). Price for single room with breakfast about 50€ (with Shower/Toilet) or 30€ (Shower on the floor???).
For cheap hotels in the center Frankfurt see also: http://www.redflag.info/hostel/frankfurthostel.htm