If I found this place, I would have been scared to go any further than the front door. Maybe, that's how @anidiotexplores felt and he decided to initiate a sloth movement.. hehehehe.
But your discoveries are indeed baffling considering that you thought it would be more of a refuge for an aging grandma.
It would suit an ageing couple, but it's owned by the local council who are trying to sell it, as well as the other buildings nearby.