Flood risk; that looks like a river valley.
flood map at
www.getthedata.com/flood-map/weare-giffard
says
"Most Weare Giffard postcodes are high flood risk, with some medium flood risk postcodes."
This is only going to get worse with climate change. I have lived in flood areas, NEVER AGAIN.
Very narrow road access. Those back-roads are generally very low on the priority list for snow ploughing.
Is there any private offroad parking ?
Flat roofs, a pain to maintain and cold in winter.
Those huge empty rooms have the comfortless look of a house which is not homely and convenient to live in. They will also cost a fortune to heat in winter (especially with uninsulated roofs.)
House is too big for the plot its on.
That could make it hard to sell; large families usually want plenty of outdoor space and parking. Rural people want an enclosed garden safe for dogs, etc.
Sorry, but I would not buy that house for multiple reasons.
I would ask to see a full year's heating bill; and ask if there's a flood history/have they ever made an insurance claim for flood.