Dario place is very well located, bus station is a walking distance, around 100 meters, near the Termini Train Station, around 10 minutes by bus. If you drive a car, you can park it on the street, the neighborhood is safe, although you will need to find the parking, near, if lucky, or a bit far, but still a walking distance.
The apartment also very clean, recommended for family, travelling with several people, we were 7 of us and we can sleep well.