I would absolutely recommend Jacopo‘s place. The apartment is in a pretty much perfect location, close to Piazzale Roma. This comes in handy if you do not want to carry your luggage all across the city upon arrival, but is also still central enough to have the major attractions at a walking distance.
It has pretty much everything you might need, even including an AC unit and a fully equipped kitchen, if you are not feeling like eating outside every day.
Jacopo is a great host who will provide you with info on how to get around the city and some helpful tips, saving you the trip to tourist information office.