From Kifissia station to the office it is less than a 10 minute walk. You can see the following maps to find your way to the RCPAR office easier.
After leaving the Kifissia station you take the Gr. Lampraki street, turn right to Othonos street, then left to Vas.Amalias street, then right to Ragkavi street, left to Emm. Benaki street and right to Pesmazoglou street.