Rosy's Retreat is a detached chalet in Bacton. It's on a small private estate with other similar lodges, but it's detached so you've got your own space. It's a single-storey place, so no stairs at all.
It sleeps two, one bedroom. There's one modern shower room with a porta loo inside. That's just for wees, though. You need to use the main WC blocks for anything else. They're on-site and there are a few of them. The chalet has a 3 Star rating. It's clean and comfortable, not luxurious.
You can bring one dog. The beach is about a ten minute walk away, and it's sandy. The Norfolk Coast Path is right there for walks. The village has a couple of pubs, a fish and chip shop, and a cafe. The shop is about a mile away.
Inside, there's an electric wood-burning stove for atmosphere. French doors open out onto a deck with seating. There's a TV, WiFi, parking, and bedding and towels are included.
Bacton Woods is nearby for more walks. Cromer is about a 20 minute drive south, and Mundesley is about 10 minutes north. Norwich is roughly 40 minutes inland if you want a city day.
Useful links: National Trust Norfolk Coast and Visit Norfolk.