Positive: Matteo is a pleasant and capable host. The apartment is in a good and quiet location, there is plenty of room, good windows provide good light, there is an "at-home" feel to the books on shelves, the kitchen is well appointed and useful.
Negative: Unfortunately, we lacked hot water for three of our five days in the apartment, even though Matteo called in a plumber. We had some problems getting connections for our devices: some plugs worked in the sockets, some did not, and we could not determine why. There are 51 steps from entrance up to the awkwardly-placed door of the apartment, though we knew it was on the top floor of the building and accepted that fact. Inside the apartment, there were steps into and out of each room: bedrooms, kitchen, living room--and not of even distance, which made things a bit dangerous until we were thoroughly used to them.