We spent a week at Stefano and Nancy's place and had a wonderful time. The apartment is compact but very modern and has everything you would want.
The kitchen is set up very well and we cooked several nights and enjoyed the coffee machine each morning.
The bathroom was sparkling clean and the bed was comfortable. There is currently no airconditioning (only a fan) which can make it a little hot but we met with the host when we checked out and he informed us he hopes to put an airconditioner in soon.
The location is a little out of the city and requires a bus ride. There are several routes and options to choose from but wouldn't suit guests who want to be a short walk away from all attractions. We got used to the Italian bus system in the end!
Stefano was very easy to communicate with and very responsive. We would definitely recommend this place to stay in Roma!