Hickling Broad and Marshes - "The largest of the Broads, NWT Hickling Broad is a year-round haven for wildlife. It is easy to spend a day walking around Hickling's trails or, in summer, gently while away a couple of hours taking in the Broad’s hidden corners on one of NWT's summer wildlife watertrail boat tours." "There is a large car park (grid ref TG 428 221), visitor centre and toilets. There is disabled car parking provision and a rough surface leading to the centre where there is a disabled toilet, hearing loop and a wheelchair available. From the visitor centre there are a number of accessible trails, both compacted hoggin or boardwalk which give easy access to two hides as part of a circular route.  
Additionally, Whiteslea track is a raised compacted granite track providing views over the marshes. Please note that there is a requirement to open and close gates while following some of the paths around the reserve." - from the Norfolk Wildlife Trust website

also see the Walks For All walk leaflet from the Norfolk Coast Partership website