The apartment is in a very good location, very close to Vatican and within 20-40 minute walking distance to all major attractions. It is very centrally located, within 7-minute walking distance to Otaviano metro station, yet relatively quiet and cozy. It is very safe as well, plus the local police station is across the building.
The apartment is on the third floor of an old building with a narrow door, hallway and staircase without an elevator, so for individuals with big suitcases or individuals with mobility issues it might be challenging to clime.
As for the apartment, we were only two and it was quite specious for us, but it can accommodate four people in two bedrooms and in case of the necessity two people can also sleep in the living room.
The apartment was equipped with all the basic equipment (e.g. TV, AC, washer, iron and iron pad, hairdryer, teapot, dishes and pots, vacuum cleaner) and they all worked ok, but there is room for improvement in terms of keeping cleanness and some more household stuff like paper towels, washcloths, etc.
Our host, Gianluca was very prompt in responding and accommodating. He arranged our airport transfers, which was comfortable. He met us upon the arrival, gave a map and a few good tips about the neighborhood and the city. He responded to my messages instantly.