If you are a reduced group of friends/family, this is the best option you will find in Rome without any doubt.
The apartment is located at one of the most beautiful zones of Rome, right in the geographical centre of the city and close to everything within a short walking distance. It is also located in a street full of restaurants, nice night life and supermarkets.
The apartment itself is simply beautiful. Clean bathrooms equipped with amenities and towels as well as big rooms with confortable beds. We slept pretty well! The kitchen is fully equipped and the living room/dinning room is just the perfect spot to chill out after a long day exploring Rome. During summer it can be very hot and the AC wasn't enough for us, but that wasn't a big problem.
Federico and Laura gave us nice indications of where to eat and what to visit in the city and also offered a pick-up transfer to the airport for 60 euros.