As you exit the Pulkovo-2 terminal you will see a bus stop near the Arrival hall.
You can either take bus N13 or one of the minibuses: N3, N13, or N113. They all go to Moskovskaya metro station. From Moskovskaya metro station take the metro to Petrogradskaya metro station. Go up and you will be on Kamennoostrovsky prospect.
Take a right turn and go until you cross the bridge, then turn right again onto Karpovka emb and walk until you reach building number 14.