In the 90's our Georgian house (that we love/bought) was furnished up to a similar standard.
It needed to be rewired and replumbed and then ££ things need to get fixed most years. I suspect that both the kitchen and bathroom were installed in the 70's.
I've only visited Norfolk in the Summer, but heating bills must be interesting (would you be allowed secondary glazing)?
Having lived in my house with a broken leg and, more recently, a twisted ankle have a think about how accessible it would be in 10 years time.
Is that negative enough?
Actually I'd also get a paper map to figure out where the routes "home from the pub" are and check where the Airbnb's are.