Francesco's Apartment was GREAT. Visited with a family of 5, and it had everything: apartment was very big and spacious (!!!), clean, and in a great location. To elaborate on location, it was ~<10 minute walk from colosseum; my family only had to take a form of transportation other than walking once, and it was a quick and affordable uber to the Vatican (we walked back, ~40 minute very enjoyable walk).
The apartment is up two very easy flights of stairs, but there is also a very nice and clean elevator you can take as well.
When we checked in, we also got help from Rudi and his wife (don't remember her name!), but they called a taxi for us from the airport, so getting to the location was seamless! Upon arrival, they had a list of restaurant suggestions which we took to and were not disappointed (we went to Alle Carrette-pizza place) twice in only four days!
In conclusion, can'r recommend this apartment enough, and would absolutely stay again when coming back to Rome!