We stayed at Gianluca's studio apartment for three nights. The apartment is immaculately clean and appears to have been refinished very recently - I agree with a previous reviewer that the photos probably don't do the apartment justice. The furnishings and fittings were very modern (nicer than we've got at home...), the lighting was clever considering the small number of exteral windows and the bed was comfortable. Although the apartment is naturally quite cool, we did use the air conditioning occasionally and it worked well. The shower is beautifully tiled, though be warned that there isn't as much hot water as in a North American set up so showering became a pretty efficient process. Also, the shower floor can get slippery so be careful. Bathroom was kitted out with a good hair dryer, kitchen had an electric kettle (yay!).
The apartment had a functional and well designed small kitchen - as was typical with another Italian apartment we rented in Florence, there were two gas burners on the stove, no oven. Apartment had a fridge, no washing machine for clothes though we noted several laundromats in close proximity.
The apartment is on the ground floor of a three or four story building. You enter through a locked courtyard, then the apartment itself has a cage door and the base door, both also lockable so we felt very secure. Within about a 5 minute walk to the Colisseum, the area was busy with restaurants (there ia a popular one literally next door), there's a small grocery store two blocks away (with somewhat mystifying hours, so get what you need when you see it open!) - but the only noise we ever really heard was from inside the apartment courtyard and only during the day. The apartment stays very quiet and is a great retreat from busy Rome. Was good to come back in the late afternoon, have a little cool siesta, the head back out in the early evening.
Gianluca was very helpful, booked us a private car service to the airport for our early morning flight back to Canada (50 euros which we felt was money well spent for the reliability of making our flight on time, you can also book a regular cab for 40 euros). We tried two eating places in close proximity to the apartment - Propoganda was trendy but sort of mediocre (we're probably not that trendy though!). Our favourite meal was from a little takeaway pizzeria a block away - for six euros we shared a surprisingly delicious thin crust pizza straight out of the oven.
We had a great stay.