Carla is a very good host and we've found in her apartment what we expected. We went with our 1-year-old baby so we decided not to use the main bedroom upstairs since seem dangerous for the kid. We used the downstairs couch, and it was perfect for the 3 of us.
The apartment has lots of ornaments, it was really nice to see them every morning, but we had to be careful with our little baby to not break anything although Carla did not seem to be really picky with this.
The location was just perfect in a quiet alley so we had a good rest after being the whole day walking. We went on foot everywhere in old Rome and monument Roma, we had to take a 20 min bus to the Vatican and the bus stop was at 5 min walking. Also, you can find many interesting places to eat and drink in this area.
Conclusion:
The location and the host are unbeatable.
The apartment was as expected, not the best for kids, and not having windows is a contra, but we knew that in advance and as we didn't expend too many time in the apartment it was good.