The flat is located in a perfect spot. It was less than 5mins walking distance from Piazza Navona. Like other comments, you can walk famous spots by walking.
It was clean and neat, just same as the pictures. There was plenty of towels in the closet, and had a washing machine and a hanger to dry clothes.
Monica and Nicola were easy to keep in touch, and fast answers. Nicola explained about so much things about the flats, taxi place, and etc.
Just one flaw would be there's a fruit wholesale store right in front of the flat, and they start around 3am.. and it makes a lot of noise, except Sunday. But still, I would def stay here again if I go back to Rome.