We had a good time at Valentina's. The flat is very spacious, especially with the terrace, and our kids (4 and 6) were at ease. We stayed there for 8 days.
There is no air conditioning (as mentioned in the description) but ventilators are provided and it was enough despite the hot temperatures (35 degrees in the day). The flat is close to Termini central station, the metro and buses so it was easy to get around.
It's a 10 minute walk from the colloseum through a park, so very pleasant. The owner is very nice and caring.
Thanks Valentina for the stay!