Four of us used Alex's place for about a week. It's a newly decorated apartment on the 5th floor in a mostly residential part of town. The elevator is tiny (two people with bags). Quite large for a European apartment, there are two bedrooms, living area, dining/modern kitchen, and two baths. A small balcony expands the living space. The A/C is great and manages to keep the entire place cool with moving air! Beds are king, choice of pillows, comfortably-firm beds. The house is spotlessly-clean. Communication was good and someone was waiting for us when we arrived early in the day from the States.
About 15-minute walk from the train station, the apartment is not really in the hub of the tourist district, but a €5-8 cab ride to most anywhere ca get you started. The neighborhood is quiet but there are plenty of restaurants, groceries, and shops within just a few minutes walk. We tried them all and had no need to go back to the touristy neighborhoods to find good food.
I can highly recommend this lovely apartment for a comfortable stay in Rome!