We (two adults and a 17 month old daughter) stayed at Audrey's place. It was a nice stay overall and Audrey was very helpful with any problems.

First the positives:
1. Convenient place with lots of good restaurants around.
2. Very convenient to go to places, Vatican is like 10 min walk, pantheon ~20 min.
3. Decent size of the place. Our daughter enjoyed the space a lot.
4. Audrey also gave us a child cot and there were also some children toys which my daughter enjoyed.
5. Grocery store right around the corner, so we were able to get some stuff and cook for my daughter.

Cons.
1. The hot water certainly seems to be an issue. The two bathrooms get hot water from different hot water heaters and one of them was not working at all. The other one has a 80L tank which is normally fine for one shower. So we had to time it accordingly so that there is some time gap between multiple people taking a shower. Even with one person at a time, you have to shower in like 15 minutes as it gets cold soon after(esp. if you like water on the hotter side).
2. The second concern was with heating. The building has common heating and though the house heats well when the heating is on, heating seems to have been turned off (or turned very low) in the night (12am) through about 10am or 11am. It does get chillier during these times. Audrey was helpful and did give us a space/room heater which we used in our bedroom (all three in one room), but other areas get cold. There is no heating in kitchen which stays cold overall, but esp. so in the mornings.

Apart from these concerns, I would definitely receommend this place.