The host, Claudio is nice and welcoming: he offered airport pick-up for me at an extra charge, which is convenient; he showed me around the apartment in person; he helped me with the luggage when checking in and checking out.
The apartment is basically as the same as the description: two bedrooms, one of them has bathroom and shower, one big kitchen, no living room.
Claudio has prepared enough essentials or basics for shower and cooking, even a welcome basket with some snacks.
Something I don't like personally is the shower place is quite small, and the central heating is available for a limited time, hence it feels a little cold in the late evening.
The apartment itself is quiet; but there is no soundproof, hence the sound from the neighbour upstairs (for example walking with boots or high heels inside, or moving tables or chairs) is a little bit disturbing, especially in the morning.
The location of the apartment is fine, walking distance to a couple of supermarkets, and/or Vatican museum. The only shortcoming is not so many bars, or restaurants nearby.