Cambridge is a tourist honeypot and, as you would expect, offers a full range of hotels and bed and breakfast accommodation. The VisitCambridge website lists a wide range of accommodation.
The cost of good quality accommodation in the city centre where the conference is based, tends to be steep. More affordable options tend to be further from the centre. Please be aware that Cambridge's heavy traffic can make journey lengths unpredictable. If driving, parking can be difficult and expensive and the roads get very congested, particularly during the rush hour. Much of the city centre is pedestrianised, making access difficult.