It had originally only one door on the northern wall. Wall paintings are of inferior quality. Above the window on the west wall there is a representation of the crucified Lord attributed according to legend to Saint Luke, but in fact the work of local painters of the fourteenth century. You will find more information in K. Weil-Garris, The Santa Casa di Loreto, Problems in Cinquecento Sculpture, 2 vols, 1977.

Further information see:
Where is the Holy House Mary lived in located? - photographs and information on the holy house