This is Cobble Cottage. It's in Blakeney, one of those cottages along the quay.
It's a 3 Star place, which means it's comfortable and clean without being fancy. It sleeps two, one bedroom and one bathroom. Everything's on the same level, no stairs to worry about. There's a small patio area out the back.
The cottage is about five minutes walk from the quay. You get the seals out on the point, and people go crabbing off the side. There's a shop and a couple of pubs a few hundred yards away. The pub does food.
Wells-next-the-Sea is about ten minutes drive west. Good beach there. You've got Holkham and Brancaster a bit further along that coast. If you go east, Sheringham and Cromer are about half an hour. Good for walking the coast path.
Facilities wise: it's got wifi and a TV. Bedding and towels are included. There's a washing machine and a cot if you need one. One well-behaved dog is allowed.
Useful links for planning: National Trust Norfolk Coast and Norfolk Wildlife Trust.