I live in Norfolk (just up the road from Gressenhall museum actually) and, although I can't comment on the area from a holiday point of view, I cannot think of anywhere I'd rather live.
It's unspoilt, imo, and really does have a bit of everything. Coastal areas, the Broads, forests, marshes, lots of fabulous days out (Dino park, High Lodge, museums, farm parks, Bewilderwood - I didn't really 'get' this place but I seem to be very much in the minority on this!) and a beautiful city.
You have Sandringham, Blickling/Holkham/Houghton Hall. Castle Acre Priory is fascinating with its castle ruins (and free admission!), seal trips from Morston and Blakeney (over 2,000 seal pups are just off Blakeney point right now), Sheringham is a beautiful, old fashioned coastal town, Holt and Burnham Market if you want to be part of the Joules brigade
or Yarmouth if you like a bit of being beside the sea side.
I love it here and think it would provide a great holiday for people of all ages.