Me and my girlfriend stayed at Valeria's for two nights and we were extremely happy with the place! Very clean, newly refurbished and the rooms were exactly what you see in the pictures!
It was very easy to get to the center of the city by bus (10 mins), close enough that on the way back we even walked the whole way (about 30mins).
One thing that we truly apreciated was the neighborhood. Very friendly and with many good restaurants only meters away.
A perfect place to rest after a busy day visiting Rome and just barely outside the center so that the surroundings aren't crowded with (other) turists.
Excelent stay!