We stayed in Patrizia's guesthouse for three nights. We arrived in Rome at the Ciampino Airport (around 9pm). We took a shuttle to Termini station and a taxi to the apartment. It took about an hour and cost about $35 euro for two people. The apartment is a bit difficult to get to by public transport. It takes about 45 minutes to get to the Piazza Navona, and an hour to get to the Colloseum (given the buses arrive on time..)
We were a little surprised when we got to the apartment since the photos emphasize the new features (ie bathroom, kitchen stove, and bed), rather than the older portions (furniture, fridge, floors, and doors). That being said everything functioned properly.
The only issues we had were limited hot water (small water tank), the noise of the water heater/fridge, and the long distance by public transit.
Patrizia was helpful in communication before we arrived but unfortunately we did not get to meet her.