Saw the Oxford Malmaison Sunday night for £1 offer posted, but not that Sunday night can be booked in any Malmaison in the UK for just £10 if you spend £75 or more on dinner.
This deal also works in their sister chain, Hotel du Vin.
I used this to book a night in the Edinburgh hotel in July 2009, and was offered either this rate for a standard room or an upgrade to an superior room for £20.
If you want to stay in a city centre in the UK on a Sunday night this offer is unbeatable (these rooms would normally cost from £150 - £220 per night). Yes you have to pay for a slap up dinner, but I would have been buying dinner anyway, and what a great excuse to eat drink and be merry to use up the £75 allocation!..
If you don't spend £75 on dinner the difference is added to the room bill (e.g. if you spend only £70 say then the room will cost £15)