Thanks to Gian Marco and Nicole. APT is in a very good location (2 min walk from the CAVOUR metro station / 8 min walk from the Colosseo metro station)
The place was clean, and portable Wi-Fi, some water in the refrigerator, washing machine, radio system, Bluetooth speakers, Nespress machine, air conditioner etc. It was a very pleasant and perfect facility.
Gian responded quickly to my message. The check-in and check-out was also available at the right time.
At night, there was a some noise from the bar, but If you don't have children, It doesn't matter. If I go to Rome, I will stay again.