I highly recommend Daniele's apartment. It's clean, very well located (a metro station is crossing the street, Termini station is 10 minutes walking, there's a lot of Trattorias and supermarkets near, there's a park in front), it has all the required services (washing machine, dishwasher, elevator, hot water) and there's a lot of space inside.
Regarding the communication, Daniele was very responsive since the beginning, always taking care of everything. He recommended us places to go to eat an to visit in general. He even helped us to arrange a car service from the apartment to the airport at night. It couldn't have been better.
My family and I visited different places in Italy, so we stayed in more than 6 Airbnbs but this was the best by far, everything was excellent and Daniele was very helpful.