We are very happy to have stayed at Maria's place! In the apartment we got a nice bedroom with its own nice bath room. The furnishment of the apartment is classy and the spaces are very clean. Particularly impressive is the terrace - It was best experience sitting in the terrace in the sunny morning, surrounded by flowers, with the great cups of coffee Maria offered us (Thanks Maria!), and enjoy the mixed landscape of the mountain and the city area.
The location is perfect for visiting the Vatican city, with less than 15 minutes walk. To the old city area you can try bikes or scooters (e.g. Lime/TIER) which are quite easy to find, but walking is also good when not in a hurry. Connection via public transport seems available nearby but not super straightforward (We didn't use it. But planning is suggested for ones who need it).
The location is not hard to find during arrival while the entry to the gate yard is directly beside a main street. If you come from the airport, it's recommended to take a taxi (costs 50 euro but worthily comfortable).
We got a feeling of how a decent life in Rome looks like while staying here. Thanks Maria again for the hosting!