Federico is a great host. He works in the apartment so he is always available to me. I explained all the details of his apartment and transportation of Rome upon my arrival, and had a special map/guide made for me. He even helped me print out my museum tickets using his printer. The location of the apartment is great, as it's 10 minutes walk from the Termini (Rome's train station, you can take the airport express from there), also one block from the nearest metro station called Manzoni. The walk to the Colosseum may be longer than expected but still reachable. The apartment is very clean and is on the first floor so it was helpful for me to bring my luggage up. Highly recommended!