BOOK IT!!! Absolutely perfect location, very close to the historical centre, the apartment fit 4 very comfortably, is incredibly clean with lovely decor and furnishings. There is a small shop down the street for groceries. Close to lots of great restaurants. The airport pick up from Roberto is a huge bonus and he is fantastic at giving recommendations about eateries and the general area you are staying in.
Just a wonderful place, don't hesitate just book it.