Stefano is the best host I ever met through airbnb. I stayed at his flat for 2 months. The location is perfect to go all the important monuments in Rome. Colosseum is just 13 mins walk away from stefano's house. Supermarket is ony 5 mins away. I really loved staying Aventine area. I would say this area is one of the best residential area in Roma. All houses are nice! You can walk to piazza navona (35 mins away from stefano's houss). I actullay used to go piazza navona every morning due to my language school is located near piazza navona. 35 mins, it sounds bit far, but sincerely, you will see all the beautiful things on your way to piazza navona.
You will pass circo maxxio, truth of mouth, local market etc.. you would love it!
I really recommend you to stay this place if you are going to stay in Rome!
Stefano is very nice person. When I texted him, he responded me in 1 Hour. And when I called him to come to flat to get some helps, he always came.
I really felt that I am living at home. :)