I was in Rome as a solo traveller, I wanted an apartment with everything needed but I didn't care for anything special, and I wanted to feel like a local. And oh, I wanted a terrace to drink my morning coffee from. =)
Marco's apartment was great. It's in a quiet area in Rome, close to transport links, of which my most used ones were buses 170 and 781, trams 3 and 8. The area is not expensive and has some local restaurants and small shops. If you walk a little further North, you'll find yourself in the old town of Trastevere with more touristy places and restaurants. I used to have dinner there and then have a healthy half an hour walk home after a dinner pizza =).
Marco is also great as a host. He was flexible with the move in, for which I am so grateful, and he was quick to reply to any questions (for example, when I got soaked in the rain and needed the heating to get warm).
Definitely recommend and definitely want to go back there and actually have coffee of that terrace!