As many have mentioned, this apartment is centrally located and many of the tourist hot spots are within 10-25 minutes walk away, the furthest, really being the Vatican. Being central does have some drawbacks, the windows do not keep out noise, but if you are out late with the crowds, you'll be fine. It appears the after party tends to take place at the corner bar and the noise can last till closing time (4am). This happened on the three nights we were there, so take that into consideration if you are staying with kids who need their sleep.
The place has everything you need for a short stay and Valerio even gives you a welcome basket full of goodies. As someone else recently mentioned, the pictures, along with well positioned mirrors makes this place seem a lot newer and nice than it was.
With that in mind, the place was nice and we enjoyed our stay in Valerio's home. I would recommend this place to any one looking for a place to stay that is well situated in the heart of Rome.