Delia is a great host: attentive, well prepared, responsive, and friendly. It seems like for any question you might have she had already prepared an answer.
The location of the stay is perfect, the neighbourhood is very quiet and peaceful, perfect for evening walks. The city centre and Vatican are still reachable with a 20-30 minute walk.
Delia gave us great recommendations for cafes and restaurants in the neighbourhood, all of them were quite good.
Overall, staying at Delia's place was one of the best experiences I've ever had with Airbnb.