Myself and Tom (Mr Fish) have just booked our rooms at The Big Blue Hotel, so will be based there.
At the time of writing direct through the Big Blue hotel is cheapest. If you sign up it significantly reduces the rate. (See images below) It's £151 B&B for the two nights Fri 5th to Sun 7th for a single room for one or £171 for two people in a double or twin (£85.50 each if sharing). Also includes parking and wifi.
Travelodge was £168 this morning but has dropped to £155 at the time of looking as i write this post. But that excludes Wifi, parking and breakfast.