This apartment is an easy 10 minute walk to the Vatican Museums, a ~30 min walk to the Pantheon and other downtown sites in Rome, and a ~30 min metro ride to the colosseum. Overall, the location was great!
The host helped us arrange transportation to and from the Rome Fiumicino airport, which was very helpful since we were a large group traveling with an infant. The driver was great, and he pointed out various sites along the route, including a local grocery store and a few restaurants nearby.
In terms of infant-friendly amenities, the host provided a pack-n-play portable crib, but no highchair or bathtub. Overall our daughter needed to be closely watched in the apartment (but we knew this ahead of time based on the photos online).
The apartment requires climbing 3 flights of stairs (there's no elevator).
The check in process was very formal and structured. They required photocopies of all of our passports, as well as a variety of other paperwork. That said, the woman who checked us in was very friendly and touched base with us throughout the trip to make sure everything was going well.