Andrea and Arnel's apartment is a must have when visiting Rome. The location is very good, it's surrounded by highly rated restaurants and the area is vibrant throughout the day/night, especially during the night where there was live music nearby and plenty of shops/locals/other tourists.
We were greeted by Arnel's wife who let us into the apartment and explained where everything was and how things worked in the apartment and the area. She was very friendly, sweet and helpful.
The apartment itself was very clean, has a nice view from the rooftop balcony, it's spacious for two people and the air conditioning was welcome during the summer.
Just be careful when booking because the apartment is located on the 5th floor and there is no elevator service. We are of average fitness so climbing the stairs at the end of the day of site seeing was not problematic. But if you are constantly carrying large luggage or moving up and down the apartment throughout the day then this may be a problem for you.