Mario welcomed us into the apartment despite our late arrival. Perfectly located for us, as we planned to arrive from the airport into Termini station which is just one stop away on the Metro. The apartment was cosy and had the basics available although I wouldn't recommend it if you plan on staying in a lot. There was a small issue with the air conditioning but Mario made sure to fix it as soon as we let him know. Mario was contactable the whole time we were there and was very prompt with his replies. There are loads of lovely restaurants nearby and it's a 15 minute walk from the Colosseum. It's not in the cleanest part of Rome but not much of Rome is!