Great place, excellent location. Great for a solo traveler or a couple. Comfortable bed and shower had good water pressure and stayed hot for both of us.
The key is required to be inserted into the wall for most of the electrics to be used. Also the AC does work well and will cool down the space in about 20 minutes and will stay cool all night, but it does take a while to figure out the remote. Less is more, just be patient with it and it'll do its thing.
Felt safe in the area, the apartment is on the ground floor but behind 3 locked doors! Two in the entrance hall and then the apartment door itself.
Noise level wasn't a problem for us overall. Only thing was there is a utility/storage cupboard of some sort right next door to the apartment door, just outside of the apartment. Someone decided to go for a bike ride at midnight one night and their bike was in that closet...so that was fun being woken up to! Only happened once though. Others mentioned the sound of the front door banging at night but we didn't notice that overly.
Overall the value of this place can't be beat. Great base from which to explore Rome. The neighborhood has some really charming restaurants for the evening too. We loved spending our areas close to the apartment with the view of the Coloseum lit up.