Public transport tickets are valid on all of Rome’s bus, tram and metro lines, except for routes to Fiumicino airport. These tickets are not valid on trains.
The closest bus stops are the No.44 and the No. 75 stops Bonnet/Carini.
No.44 stop is a 400m walk from ACURome campus, see map below. This bus route will take you from the centre of Rome into Trastevere.
The No. 75 bus stop will take you from Trastevere all the way until the last stop, Roma Termini train station.
Public-transport tickets can be purchased from newsstands, tobacconists and vending machines at metro stations and on buses. You can also purchase tickets on your Smartphone by downloading the MyCicero or Tabnet app to use the BiPiù service that allows you to buy individual tickets or monthly passes. Tickets on BiPiù can be purchased as one-day, multi-day or monthly passes and may be used on either buses or the metro. Individual tickets must be activated on the app before boarding; however, monthly passes do not need to be activated before boarding. Simply scan the QR code on your digital ticket as you board and you are good to go!
For more information please see;
https://romevacationtips.com/how-to-use-romes-public-transport/
and
http://www.mycicero.eu