We were very happy with the apartment for the comfort, space and excellent location. Really can't be beat as we walked practically everywhere. The restaurant recommendations, especially the one directly opposite was excellent. Our only little suggestions for improvement:
1) Provide basic amenities like box tissue paper in the apartment.
2) If at all possible, improve on the water pressure of the shower. It is quite low in spite of the fact that it is a ground floor apartment. But it was good that we could shower more than once a day because the hot water was heated by gas.
Alessandro was helpful and available at even odd hours for enquiries, to help with arrangement of airport transfers or tours. We had a great time, and if our wish at Trevi Fountain comes true, we will be back!