Me and my friend had a wonderful stay at Iris Casa Vacanza. It looks exactly the same as in the photos, and it was very clean. The apartment is close to Tiburtina train station, so it was easy to get to and from the airport and city center. The metro took about ten minutes to city center, and the train to the airport about 45 min. The only downside was that the metro closes at 11.30 pm on weekdays, so you have to take a taxi back to the apartment if you want to stay in city center longer than that. The street outside the apartment was a bit noisy, but it was calmer after 11 am so it was no problem to sleep. Luigi always responded quickly on airbnb and on WhatsApp, and contacted us both the day before we traveled to Rome, and after we had landed in Rome. If I'm ever going back to Rome I would stay at Iris Casa Vacanza.