Marco picked us up at Termini as agreed, and showed us the apartment and they had a paper ready with all the important informations you could need, what bus to take to the city and so on.
The apartment was very clean, and just as expected! Only "bad" thing was that there was no big knife of bread knife in the kitchen, but we figured it out anyway.
It was a great apartment in a fine location, 15 minutes walk away from Termini. Thank you for a lovely stay in Rome!