Nicola's place is in the perfect position we walked to everything including the vatican, there is a supermarket virtually across the street and a bar and coffee shop below the unit.
There is ample room in the unit for 2 couples, each with their own bathroom, we had the upstairs room and the shower was good, but the other couple said they had trouble getting enough water and enough heat.
The kitchen though large enough with oven, cooktop and fridge wasn't very well equipped for cooking, only one frypan which wasn't usable and no foil, paper towels, tea towels or coffee maker. Though there is sauce pans and oven trays. The power went out twice in the first evening which was a pain but Nicola turned up quickly to show us how to rectify, not sure it was caused by the oven as thats the only time it happened.
Our bed was very comfortable and the room quiet.
We had a strange issue with the cleaners but it wasn't Nicolas fault and I'm sure has been rectified.
All in all it is fantastic value for money in an unbeatable position and Nicola and his brother really put in a lot of effort to make your stay perfect, from meet and greet to in our case, Daniel helping take out luggage out at the end of the stay.
Highly recommended but beware the stairs if you're older or unwell, Nicola is very upfront and honest about these, so stay and enjoy Rome from a locals perspective.