http://www.couchsurfing.com/
I have been doing this for years. Save a lot of money and you get to see the city from a different perspective.
@Vinz started
London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
This site is supported almost exclusively by donations. Please consider donating a small amount regularly.
http://www.couchsurfing.com/
I have been doing this for years. Save a lot of money and you get to see the city from a different perspective.