Time Out says
Si o No was one of the first examples of the now oh-so-typical café bars in Zurich. It hasn't lost much of its charm over the years.
One of the first examples of the now oh-so-typical café bars in Zurich, with slightly shabby and non-matching tables and chairs, a Moroccan tiled floor, big round lamps picturing a baby and chairman Mao, amongst others, and a good tapas platter for those who never make it home for dinner. Si o No has not lost much of its charm over the years, though some might miss the hustle and bustle of the early days and the thick clouds of smoke filling the room.