Luca's place is nicely situated close to the Garbatella station, which can easily take you into Rome proper. The area is safe enough to walk around late nights and there are amazing restaurants to grab a quick bite from around that Metro Station, too.
However, be prepared to not get enough info about check-in and check-out from Luca. Though he answered how to do so via messages upon my query, the host should be able to give you those details from the get go in order to make everything smoother.
Other than that, Luca's place was great. Again, location is everything here. Most places will tell you to stay in Rome center, or in Trastevere. You shouldn't. The Garbatella neighborhood is the best place to stay in Rome and Luca's place is the most responsible way to spend your money on eating rather than a fancy hotel. And believe me, you will need to save your money for all the great restaurants and bars near Luca's place.