The apartment is really beautiful and spacious, specially for being right next to the center of Rome.
Overall, great stay, but 2 drawbacks:
1- breakfast wasn't provided, although it's mentioned (they only provide coffee power and 1 bottle of orange juice - we were 4 adults for a 4 nights stay... )
2- we were instructed to park in a unmarked parking spot. Although we didn't get a fine, it's different than having free parking nearby.