My wife and I had a great stay at Piero's in Trastevere. We were able to check-in early and drop our bags off which was a huge help. The apartment felt even more spacious than we expected based on the pictures. Everything was clean and well furnished. There was a lot of helpful information sheets/maps/books throughout the apartment as well. I'd highly recommend this place for a couple or a small family visiting Rome (we did not check out the sofa bed).