My friend and I stayed here for a week.
The room was clean, there's aircondition and pretty much everything you need, except a few things in the kitchen, such as a coffee machine and an electric kettle - but it's not the end of the world!
The apartment has such a good location! It takes 2 minutes to walk to Corso Umberto, but it's still very peaceful and quiet around the apartment. You just can't have any walking problems if you want to stay there, because the stairs are really steep and narrow, and the small roads that lead up to the apartment are pretty steep as well (but Davide also mentioned it in the description).
The shower works well, except it's difficult to get the right temperature, as it takes a lot of time to change it.
We had a misunderstanding with some of the other guests, that thought that the bathroom upstairs near the kitchen was shared, but we wrote them a note and then it wasn't a problem anymore:)
All in all, it was a really good stay and we enjoyed it a lot.