Roberto's appartment is cozy and clean. We had everyting we needed. There is a supermarket just 2 min from the appartment (but if you decide to pay by card keep in mind that your purchase shuold be no less than 10euros). Also there are some good places for eating out. Locals like them a lot) the only one problem was a location...it is far from the center and the underground is under repairment till the September 1st so we had to use a tram and it took almost 1 hour to get to Termini where we had to change to underground to go to different places. But when underground works normally it will be a perfect place for staying)
ps. also there is a night bus which we used several times. it begins to operate at 12.15am and without any changess of transport you can go from the center to the appartment)