The apartment is just as beautiful as the photos show - well decorated with high ceilings and a spacious loft area for sleeping. I loved the world map theme and the comfortable couches. The location is right in the heart of the cute, ancient, cobblestone street part of Trastevere, very close to Ponte Sisto, which leads right into the heart of Rome's attractions. And if you like nightlife, there are lively bars and cafes all along the street. Luigi and Alessia (who helps him manage the place) are both wonderful people - very quick to respond if you need anything at all and very kind and pleasant. Overall, a great place!
That said, there are a few things to keep in mind depending on your needs:
1) The street gets pretty noisy at night since you are right above some popular bars and cafes. If you are sensitive to noise, this might not be the right spot for you (or at least bring earplugs).
2. The apartment doesn't get very much natural light during the day.
3. The bed is a bit uncomfortable because there are buttons sewn into the top and sticking up where you'll be laying. This would be super easy to fix, though - I'd recommend asking Luigi if he can purchase/add one of those pillow/foam tops and/or even bringing your own.
4. The power in the building went out a couple times during our stay for 2 - 4 hours at a time. I don't know if this was a fluke or if it happens often, but it's not quite ideal if you have food in the fridge or are in the middle of Skyping with family back home.