Hi,
Our stay at Edoardo's was very nice. Her mother came to give us the keys. She was 20 min. late so we were a little bit disapointed. As we didn't have her phone number, we couldn't reach her, and for 20 min I thought a bad experience was going on... But when she arrived and when we entered the flat, we just saw that everything was as described : the flat was clean, the sheet were clean and fresh, all the services described were functional, etc. There is a washing machine, very convenient.
The flat is very luminous, big enough for 4 and even 5 people. The bed is comfy, and so are the mastresses is the living-room. The entry is on the ground floor (very convenient for people that can't take the stairs) and the view is 2 floors high on a little and cute place and no face to face building (so that's why it's luminous). The building seemed secure enough to us.
The area is calm (though it was july, so summer time, so people hanging out until midnight) and safe. Keep in mind you are in the center of Rome though (bring ear plugs if you are a light sleep, but you will probably walk so much during the day that, as we did, you will sleep very quickly and deeply). All the rooms are on the place side (no room on a road side so no cars noise).
The flat is perfectly located. 10 steps (!) from the metro Cavour, 15 min walk from Termini train station, 10 min walk from Colisée and you can just walk everywhere. Very convenient too : there are lots of afordable restaurants nearby (around 8 or 10 euros for a pizza or pastas), a grocery shop in front of the flat and an Internet cafe few steps from there (there is also Internet at Edoardo's flat but we didn't have our laptop).
There wasn't breakfast when we arrived so we just sent a text message to Francesca (Edoardo's mother). She came and let some tea, coffee and biscuits and let us a text message after she came. She's very nice and helpful : don't hesitate to reach her.
Finally, as the flat wasn't booked the day we were leaving, Edoardo's family allowed us to check out later (with no more fees) so that we can leave our luggage until 2 pm. Otherwise, there is a luggage deposit a Termini metro station.
In conclusion, our stay was very pleasant, due to exceptional Roma, but also due to Edoardo's flat. We knew that coming at night, we will enter in a fresh, clean, comfy, safe and quiet place, so exactly what you are searching for vacation.
Last advice : don't hesitate to reach Edoardo or her mother !, they are at your disposal, and ask for Edoardo's mother phone number so that you may reach one or another !