If Mrs R can stand roughing it a bit, I'd recommend
Deepdale Camping which does 'glamping'. Any visit to Noth Norfolk is incomplete without a trip to
Cookie's Crab Shop in Salthouse.
Norwich itself is worth a visit. Don't miss the Cathedral.
Someone else has mentioned the Marian Shrines at Walsingham. As well a visiting the two shrines, I'd recommend poking your nose into the Orthodox chapel,
St Seraphim's, in the old railway station.... the ikon painting is superb.
Someone else has recommended the steam railway - it's fab! For bird watching, there's several RSPB reserves on the North Norfolk coast and, of course, there's the seals at Blakeney Point.
Avoid south Norfolk... unless it's a visit to the
English Whisky Company - and steer clear of Great Yarmouth. The only thing Great about Yarmouth is the road out of it.