The apartment is right around the corner from both the bus and tram stations into the center and Termini. The subway is about a 10-minute walk away and it's about the same to the heart of the Pigneto neighborhood. We stayed here for 5 nights and had a great time, the apartment has everything we needed (including AC!). Check-in/out was super easy.
Would definitely stay here again the next time we're in Rome.