The apartment and location is great. We enjoyed our stay in Testaccio very much. 10min walk will get you to Trastavere or you can take a tram to reach the Colosseum and surroundings in even less than that.
Many thanks to Maria Cristina. The communication was super easy. Suggest to look at her Guidebook of Rome. There are some gems.
Highly recommend to those who want to explore the Rome by foot.