Cheap London City hotels at the weekend

Last weekend I stayed at the Crowne Plaza London City, near Blackfriar's Station, on a cheap rate from Expedia.com. Many business-focused hotels in the City are very cheap on Fridays, Saturdays, and Sundays. These hotels are a cheaper (and nicer) option than tourist hotels in places like Bayswater or South Kensington. The Crowne Plaza London City has a good basement bar, which serves Hoegaarden beer and surely the smallest serving of nachos you will ever see this side of Lilliput. St Paul's Cathedral, the Tate Modern, and the new Millenium Bridge are all close by.