We had a great stay at Federica’s place! It's in a perfect location for exploring the Trastevere neighborhood, but still very quiet. Rome was very hot during our visit but the AC in the apartment kept it super cool and comfortable. FWIW, I was initially planning to visit Rome on my own, and while I ended up having someone join me for the trip, I can tell I would've felt safe staying in Federica's apartment as a solo female traveler.