It should be a grim place to visit.
The article refers to other camps being tarted up somewhat, therefore for at least one example shouldn't they follow the sort of thing the National Trust did with Calke Abbey?
Millions have been spent there (Calke) and the house is now 'preserved' exceptionally well but it still looks as worn and lived in as the day the last owner died, no glamour has been added and the place is more moving, realistic and affecting than any 'restoration'.
Not having been to Auschwitz though, I don't know what state the place is in now.
Cheers,
Adam.