The following links indicate other options and modes of transport for getting to the IIT.

Public Transport from Genova Airport 
Public Transport from City Centre by Metro
Public Transport from Genova Brignole Train Station
Public Transport from Genova Principe Train Station

Directions from the Highway A7: Exit– Genova Bolzaneto

After you exit the highway keep going right, do not enter the roundabout. Keep going after the first red light (after the Q8 gas station on the left side) and keep left. At the next intersection continue to keep left, go beyond the ERG gas station to your right, GO BEYOND the red light right after the gas station and only then turn right in Via Morego (you will see a pizzeria on the corner of the street).Continue uphill for about 600 meters: you are at IIT.