Barbara and Antonio are very kind and helpful. Antonio picked me up from the railway station and accompanied me there on my way back. They live very close and are available in a few minutes if any problem rises. The flat is exactly as you see on the pictures - new, furnitured with taste, a lot of space. The bed is very confortable, the kitchen has everything in case you want to prepare some food at home. The area is very quite, green, safe and well connected with public transport (train to Trastevere Stazione and Vaticano and tram to Trastevere).
Barbara, Antonio, thank you, will stay at your beautiful home with pleasure again.