Everything was great. Lorenzo is always in contact on whatsapp and the checkin was fast and comfortable. I should notice great location of the apartment: many sightseens are in walking distance. It is close to the central railway station (Termini). We had a train from the airport and had no trouble with getting to the appartment.
The apartment in real is a bit worse than on the pictures, but this difference is not critical. The only negative point is too small lavatory seat and low water pressure in shower. It was pretty cold when we checked in, but Lorenzo explained how to make it warmer and everything was ok.
I would like to advise Lorenzo as a host and his apartment.