The apartment is very comfortable on the 4th floor of a small 5 storey block. Very peaceful and the view form the balcony towards St Peter's Basilica is even better than the photo on the listing. We enjoyed sitting out mornings and evenings with a glass of wine gazing at the view.
Great location for St Peter's square (10 mins walk). The station (Roma San Pietro) is really close (but not noisy) and provides a great service both to the centre of Rome and to Fiumicino (1 change). Bus number 64 also goes from the station about every 7 minutes and (particularly when a little weary) gave a great ride right into the centre of Rome (only 1.5 Euros for a ticket that lasts for 100 mins on the bus network). We did walk to Trevi Fountain and Pantheon - easy walk of about 35-45 mins. The Colosseum is about another 15-20 minutes walk.
The local 24 hour Carrefour supermarket (5 mins walk) has all the food and drink that is needed - very fresh, clean and helpful.
The small pizza place Pizzeria Davina (5 mins walk) makes great pizzas - particularly good for take-away