Soldato
63 square metres is a decent size.
You might struggle to get water though which is the big issue.
Otherwise if it has access to electricity then you could easily spend the other £20k turning that into a nice home if you know how to use a saw, hammer and a drill.
There's no way a first time buyer would be able to get a mortgage on that with the view on spending 20k on it to turn it into a home