Excellent flat in a very central area. The Vatican was just a 5 minute walk and the metro a 10 minute walk. Castle Saint Angelo was very close too. The neighbourhood was full of nice restaurants and excellent shops. Very safe and quiet during the night.
The flat was much bigger than expected, and very well equipped in the kitchen bathroom and bedrooms. We had everything we needed. All the place was very clean when we arrived.
The host was very kind with us, the communication was every effective and fast. He even helped us arrange a reliable taxi to the airport in the night.
I highly recommend it and I would totally stay there again.