Massimo was the ideal host! He was super helpful and considerate, always available and trying his best to make me feel at home. The apartment was great, clean and very cosy. I think the location is perfect, as it is on a very quite, calm and safe street, but at the same time it is super easy to use the public transport (the metro station is around 5 minutes away). It is also within walking distance to some main parts of the city, which was perfect for me. I would highly suggest it to anyone who goes to Rome.
The perfect place, for a perfect vacation. :)