Over the four doors and on at least three of the walls still today it is possible to admire a fresco of plant motifs, painted with light colours on a dark background; it is clearly a work from late Renaissance. To the right of the fresco, by an opening that is today closed, there is a much older layer of paint with various types of decorative elements: a design with heart shaped leaves, a series of black eight-pointed stars, and other more geometric inventions.