We had a great time staying at Nicola's place. He is very accommodating and we had the whole place to ourselves.
The location has all the features you might need for a short to medium stay and the Italian breakfast is a welcome bonus.
The place is close to the subway and there is an amazing Pizaria right next to the apartment that makes delicious pizza and pasta and it is very affordable.
I can highly recommend Nicola's place if you visiting Rome.