This is on Expedia.co.uk, and is without any voucher applied. I was looking at MEX hotel rooms on random dates, and found this offer:

Barack Obama Specl-Small Help for Crisis-European Plan
The normal price is 105 pounds.

For example, Dec. 9-10.

Now I don't think this hotel, or almost any hotel in MEX, is worth 105 pounds per night, but I'm positive that 12 pounds per night is a good deal.