I highly recommend Massimo Livia's apartment. It's clean, pleasant, and comfortable and meets all my expectations.
The location is excellent and central, close to the Spanish Steps; the area has many restaurants, shops and two supermarkets. The area is very nice, small streets, picturesque alleys, near the metro station, taxi rank in Piazza of the metro, and there is no fear to walk around the area late at night. Proper air conditioner and refrigerator working well despite the intense heat of the summer in Rome (and unlike most other places in Rome) and Wi-Fi usually works (probably a problem that characterizes the Roma at all). Nice and clean apartment, with double windows prevent road noise to enter, equipped with everything needed, bedding, towels and kitchen utensils. There is electric boiler for hot water. The apartment is located on the first floor.
We were staying two people. Although it has two double beds, but less comfortable bed in the living room and since there are two rooms, in my opinion it's stipule for two people than to 4 as stated.
I haven't met Livia but there was no need. Her father was waiting for us in the apartment (although we got after a delay at the airport). Livia leaves at the apartment complete instructions for what needs to operate and her dad actually instructed us how to run things in the apartment.
At my request, Livia was very kind and checked for us the best way to get to the "Neil Young" concert in "Ippodromo della Capannelle" and also ordered us a taxi back to the airport.
Due to the intense heat and the amount of tourists I do not recommend Rome in the summer, but if you have already arrived, I highly recommend the apartment of Livia
Ossi. Israel. Tel - Aviv. July 2013