If you don't have a room in Wageningen yet, you can probably stay with someone else in your AID-group. This can be arranged by your mentor. If this is not possible, you can check the housingdesk website or kamernet for a sleeping place or room to rent. Housing organisation Idealis takes care of a major part of student housing in Wageningen, you can subscribe for a room on their website but you will not be the only one subscribing. Take into account that subscription does not result immediately in a room.