We had a great stay at Paolo's place.
The location was spot on for us - with plenty of restaurants and bars nearby. We like to explore a new city by walking, and were able to reach all of the tourist attractions by foot. The Trastevere neibourhood is great and a bit less hectic than the center, yet only a short walk away.
Communications with Paolo were great, with directions given to reach the apartment from Termini station.
We would love to stay again next time we're in Rome!