The society are looking into a crashing service where Durham students will open their homes to allow visiting delegates to stay without a fee over the duration of the conference. If you are a student of the university, please consider helping other delegates by allowing them to stay with you (especially if you’re going to be a delegate yourself)! Here is the sign up form to allow them to crash at yours.
Otherwise, another option for delegates is the Premier Inn which is well located for both social events and debate venues. The rooms can be for up to 2 people, with prices as low as £42.50 as the price per delegate for Friday and Saturday nights (as checked on 11/1/18). The organisers will not be assisting with this, and delegates will have to book through the hotel website.
Otherwise, other plausible accommodation options include Marriott Hotel which is a 5 minute walk away from Elvet Riverside, the various AirBnB locations available in the city, or even accommodation in Newcastle which is only a 15 minute train journey away from Durham.