My group of 5 friends unanimously voted Elisabetta's apartment the best out of our 5 apartment stays for our European trip.
The place is HUGE for a European apartment and Elisabetta's idea of 'essentials' is much better than most hosts. She had both shampoo AND conditioner in the bathroom (only place to offer conditioner, which I consider an essential but I guess most people don't), detergent for the washing machine, various cooking supplies and a good stock of pans, dishes, and even food containers! Everything was clean and wonderfully organized. When checking in, Elisabetta gave us a full tour of everything in the apartment, including a lovely guide book she had put together for guests.
The apartment location is probably about as good as you can get without being directly downtown. It is a 5-7 minute walk from the Rei di Roma metro station which means it is very easy to access public transportation. It is 4 stops from the train station (Termini) and 5 or 6 from the Colosseum. It is basically a minimum of 20 minutes to get anywhere.
The apartment is literally next door to a piadina place (kind of like wrap/sandwich thing), which is great for a quick bite. There is a supermarket within a 10 minute walk, which was a great place to pick up breakfast items.
The only con of the apartment is the second toilet. It is located next to the washer in a tiny, tiny room that barely fits them both. There is no sink and the door is that kind of privacy glass stuff you see in showers, the obstructs the view but totally shows outlines. Not the most comfortable place to do your business. It is a squeeze to reach the toilet, so if you aren't small enough, you won't even make it.
One other thing to note is that the shower is actually an outfitted bathtub, so it is very narrow. Everyone in our group was fairly small or average, so this wasn't a bother to us, but even a regular tall man might find it a bit uncomfortable.
If we ever returned to Rome, we would definitely consider returning to this apartment!