Anna's place was fabulous. It was different to what I expected, but all in the best way. Pictures perhaps suggested a newer stylish apartment, which wasn't the case, but that's exactly what we wanted and really loved. It is in 3rd floor (got to expect a few stairs..) in an old huge house, with wonderful touches of old charm, beams over all ceilings, stunning French doors in dining and front rooms. Kitchen is small, but in our case wasn't really needed as much so absolutely perfect size. The rest of the apartment is pretty huge, tons of free space. Bedrooms good size and plenty of storage.
The terrace obviously topped it all off, amazing views. You won't see the sunset, but the views were stunning anyways, over rooftops and a couple of churches. We went in October and used the terrace in the mornings (definitely with a cardigan..) and every evening, so warm, beautiful and comfy.
Only slight negative (might be irrelevant to some) was the coffee machine. To make a coffee, it took good 20/30mins, so if you're in a rush, turn it on right after you wake up.
The location was wonderful. We walked everywhere, my 60 year old mum did too, Vatican, Villa Borghese, Coloseum (most of these about 30mins away at most). Restaurants very near, one decent literally in front of the house. River walks stone throw away and gelato everywhere.
We had trouble with transport from the airport, taxis nowhere to be seen, about 30 people in front of us queueing. So we took the bus to Termini station and then walked about 35mins to the apartment. Doable, and our local contact for the apartment was very understanding, but if you can,book a taxi ahead. There is a free app called Free Now, we used it on way back, booked 2 taxis online and both were fantastic, on time and in the right place..
All in all, I would definitely recommend Anna's apartment, if I ever go back (fingers crossed),I wouldn't hesitate booking the same place again.