This is an excellent place to stay. Testaccio is a great neighbourhood. Perhaps not quite walking distance from Centro Storico, but easy to get there on metro and v close to Trastavere. Also it's very handy to walk to outlying southern attractions like Museo Montemartini and is v convenient for trains to Fiumicino via Ostiense. The apartment is just as photographed. Pretty spacious, v tastefully furnished, v cool in June heat, in a solid quiet building with excellent bakery (Panifico Passi) just on your doorstep. Above all though Vincenzo was a great host and able to meet me very late when my night flight into Rome was much delayed. Strongly recommended.