The place is exactly as described. The location is perfect (3 minutes from the metro and a number of buses that take you wherever you need to go). It is big and confy and Roberto was a great host (he also gave some good restaurant advice and reccomendations about taxis to go back to the airport).
The only two things to notice are the thin windows, which don't play nice with some annoying people at night or early in the morning (screaming and car honking - a lot of car honking) and the wifi which doesn't reach very well one of the rooms (but this is really minor since it works perfectly in the other rooms).
That said, I think we were unlucky with the noise, because the apartment is on a small lateral road... who knows... maybe we're just used to the calm in our countryside neighbourhood.
Anyway: those two minor things aside, I strongly recommend this place.