This is a beautiful apartment located about 6 blocks north of the Termini (rail station), near embassies and government buildings, an easy and safe walk from the language school we attended. As other have noted, the neighborhood has many restaurants, grocery stores, etc., nearby, including an exceptional wine store (Tremani) two blocks away. Cabs to places near Piazza Navona and the Pantheon cost 10-15 Euros; we used the Free Now app to get taxis.
The beautifully-decorated apartment is well-designed by the architect owner (Sergio) to take advantage of the space, with two bathrooms -- one ensuite downstairs with a beautiful tiled step-down shower, the other off the hallway for general use (and use by those sleeping in the loft). The loft bedroom is accessed by steps and has clever shades that can be lowered to cover glass partitions and provide privacy for sleepers. I could stand without slouching (I am 5' 3") though my head almost hit the ceiling. The entire apartment is well-lit and the living areas take good advantage of natural lighting.
Because I am a serious hobbyist cook, I always look at kitchen equipment in rentals. The kitchen is well-equipped for making breakfast and simple meals but renters who plan on cooking in more elaborate ways should check with Antonella (one of the two owners) to see if it has dishes, utensils, etc., needed to meet their cooking needs.
Overall this beautiful apartment more than met our expectations. It was also very private and quiet. We would definitely rent it again.