By the way, if you'll be staying in Rome for a bit, I would definitely recommended Rick Steves' Italy Audio Tours. You can get the app or just download the files on your phone: https://www.ricksteves.com/watch-read-listen/audio/audio-tours/italy

We did quite a few of them and they were really interesting, for example the ones for the Colosseum and the Roman Forum really added to the experience, as you are basically being guided around and learning interesting facts you otherwise wouldn't know unless you maybe book an actual tour. I also really loved the Trastevere walk: http://podcasts.ricksteves.com/walkingtours/Trastevere.mp3