The entrance is round the back and you are invited to explore upstairs first. You climb the stairs lined with a wallpaper which seems at first to be quite William Morris in style, but a closer look shows a somewhat sexual element which you gradually see pervades his work along with fantasy themes.
And even a painting in the style somewhere between Burne-Jones and Munch.
Rating: four and half stars. A very interesting experience, but I would have preferred more Wagner and less Fuchs.
Further information: there is an excellent piece about this Villa and the nearby Wagner Villa 2 (which we unaccountably failed to visit) on Wiki Arquitectura.