Upvote:0
Amongst other options, if you are in Rome as a tourist the Roma Pass gives you several days of free bus and metro travel, skip-the-line access to Rome's main attractions, and comes with a handy street, bus and metro map.
Upvote:8
On your laptop/mobile phone, Google Maps offers this.
Alternatively, Open Street Maps. You can download offline maps to use without internet with apps like OSMAnd.