Mattia is great, one of very few professionals, I recommend everyone to book and stay with Mattia, he was treating us as clients, providing tips for different topics to visit in Roma, both for social life and history tour, to say. If you choose to go to Roma, please consider staying with Mattia, place is very nice, located 10min away by Metro, Tram or Bus from almost all historical amenities, 5-7min from Coloseum and Venezzia Square, 15-20min from Spanish Square, Fontana Di Trevi, Pantheon, Navona, etc. Next time when visiting Roma, we'll stay with Mattia for sure.