We stayed three people in this lovely apartment, and we liked it so much here. We slept in the master bedroom and one (short) person on the sofa, and there was no problem. Almost no noice from the fire station with the Windows closed.
The location is in walking distance to everything You would want to see in Rome, and just a short walk from Termini. We did not take the bus or the metro at all.
Super easy check in - and out, helpful hosts and a spacious apartment. I would definitley reccomend this apartment when visiting beautiful Rome, and we hope to be back.