I actually love the location of the Norfolk house - if it is beyond the pavement to the village there is a surfaced coastal path that is very lovely and goes straight to Blakeney Quay.
It is quite a way above the marsh, I have never known those houses or that area flood.
Blakeney has flooded very rarely - what does happen is very high tides that cover the road for a couple of hours. All the locals know about the tides and it and it isn't a problem.
The area in front of the house is salt marsh and in RL very beautiful if you like that sort of thing. You also get views over to Blakeney Point and along the coast. The marsh is covered at very high tides - the creeks fill at normal high tides - the ecology of a salt marsh. It isn't a 'bleak' location, it is a short walk to a bustling village with a small supermarket, fish shop, deli and touristy gift shops, galleries and cafes.
However, it is pretty hideous and I can't begin to think how it got planning permission,