Buy-A-Gift.com currently have a 2 nights for the price of one on short breaks across the UK, so was £199, now £99... However, use the code 'sale25' and get the two nights for two people for £74.25 (using the e-voucher option) - Including breakfast! There is a long long list of locations and some lovely castles and historic buildings are included. (Vouchers are valid until end of April 2012).
Don't forget 10% quidco as well, so potentially 2 nights hotel for 2 for under £70!