Let’s start with the real pros:
The apartment is very big. Very well located. Metro station is 3 minutes away. You are in the colosseum 10 minutes. Communication with the host was fluid. There is a parking right across the apartment (20€/day which is standard in Rome/Italy). Apartment has everything you need.
The (really) minor cons:
The apartment is a bit older than it looks. The elevator is not big and old so beware if you need space.
Nothing to worry about if you favor location over comfort.