Great location, metres away from Campo d'Fiori and numerous restaurants and bars. About 20 min walk to the Vatican and very close to Trastevere (amazing restaurants and cheap too).
The apartment is in a really old building, amazing character and very clean with lots of what you need on a holiday - plates, cutlery, etc.
The apartment is noisy - it's off a busy street but we expected that and packed ear-plugs so would recommend you do the same.
We would definitely stay here again...5 stars!