Can't remember seeing many bikes or any rented ones. It's too small to really warrant anything other than walking, with slippery cobbles and boku pedestrian tourists.
There is a rental place underneath the station - will do by the hour or all day. Standard Dutch bike type things. Good value. Staff v. nice. Rented bikes for me and kids there this half term.
Nice thanks all. Whats the city bike situation like there? Are there city bike rental services?