We actually never met Simona but her brother Massimo filled in splendidly.
Transfer from the airport was stress-less as Simona booked a car for us (Massimo arranged a taxi on our departure0.
We booked for four nights. We found the first floor/one-bedroom flat, perfectly equipped; Massimo met us at the door and gave the most precise, detailed introduction to both apartment and neighborhood. There is a lovely private terrace, that because of the poor weather we brought with us, went unused; it would be a perfect oasis in fair weather
You are situated adjacent to the Vatican right at the top of the hill...To the left is the Vatican museum, to the right is St Peter's and the Tiber. We walked continuously, eschewing the convenient busses (in rather poor, somewhat unusual stormy weather) to both sites above, and to Trastevere as well as a long general tramp around the neighborhood and across the river.
A big assist for us was Massimo's dining suggestions, including (quite modestly) his suggestion of his families restaurant; several generations in age; opened in 1938...It was wonderful and reasonably priced. Dal Toscano, Via Germanico 58.
The flat, the restaurant, and the superlative host are highly recommended.