We stayed for a long weekend in Rome and had the luck to stay at Humberto's awesome place. For 4 people the apartment is perfect. The place is located in a nice neighbourhood and has everything you need.
Best of all is, however, the host Humberto. I have not experienced a better host in all the time doing airbnb! He took the best care and was very helpful in all aspects.
If in Rome you should stay at this place!