Paul Siskin of Siskin Valls Interior Design believes flexibility is fundamental. “My work is not exactly art in the sense that it has to function. I try to express what my clients want but often what they want are design fantasies. One aspect of my job is to bring them back to reality about the way they actually live.” He has no particular style to his designs, as all eras interest him. What I love about his diverse style is that he prefers to mix old furniture in modern spaces and modern furniture in old spaces.