Photography is not allowed so I have taken these from the internet to give you an idea of the opulent interior. This is the Arab Hall, designed to to display Leighton's collection of Islamic tiles. There is a golden frieze surrounding the domed ceiling. In the centre of the room is a fountain.
Photos courtesy of Flickr share
Another room has marble pillars and brilliant blue tiles.
Upstairs you can see his studio with its large window which encouraged other artists to move into the road to live in similar houses. They must have been wealthy artists to live in this area.