I will absolutely be staying at this place again if I'm lucky to see it available when I'm next planning a return to Rome. I loved being in Monti, with its bars and restaurants and close proximity to the Colosseum and the Roman Forum.
It's also only a 15 minute walk or a 5 minute scooter or bike ride over to the Trevi fountain or Pantheon area. Roma Termini train station is also very nearby. The street that the flat itself is on is also very cute with great places whichever direction you choose to go.
And the place itself. It's got two mezzanines and a spacious roof terrace. I loved it and gave many tours to my work colleagues while working from the place (which has wicked fast internet speeds by the way, 200Mbps+ recorded a few times). As I say, I hope to stay at this place again.