The house on this picture is not chateau Mirandol, it is called Briance and is situated 150 meters below chateau Mirandol. Chateau Mirandol itself is situated on a high 'causse' (chalk-rock) which overlooks the 'Cirque de Floirac'.
Also I think the house on the picture is in the community of Saint-Denis-lès-Martel instead of Gluges.