The main lecture hall of the CNR is at the ground floor of the CNR headquarters, 2 minutes walking from the Sapienza University and 20 minutes walking from the central railway station of the city.
The CNR central building is the unmistakable red building in Piazzale Aldo Moro. Please note that the most direct entrance to the Conference Venue Sala Convegni is on the side of the building. The main entrance to the CNR building (the one with flags) still leads to the Sala Convegni but through a longest internal route.
Plane
Reach Fiumicino Airport, take the fast train to central railway station (Termini) and then walk 15-20 minutes (googlemaps states "16 minutes") or take a bus, choice among 310, 71 or 492, see this link .