Unfortunately we didn't get to meet Susanna, but if you ask us what we think about Giulia, we cannot find enough words to describe how thankful we are that she was our host in Rome.
From the first moment we met her, she was so welcoming and made us feel at home right away. She gave us so many recommendations for different kinds of places to eat and drink in Rome (and for the best pizza, tiramisù and gelato!), which was very helpful to us. She provided us with a royal breakfast with anything you could want to eat or drink in the morning (which is very rare for airbnb!) and everything you need is present at her apartment. Also the location is pretty great, as everything is accessible by metro/bus/tram or even by foot if you really like to walk! On top of that, Giulia is just an amazing person with such a lovely personality, which makes you adore her right away.
On a sad note: we had the experience of being robbed at our very last night in Rome (we had our flight really early the next morning and needed a valid ID) and as soon as we contacted Giulia about this, she rushed over to help us even though she didn't have to. She helped us at the police station (which was not easy) and then cheered us up with her smiley company the rest of the night.
We could not say one bad thing about this experience with Giulia. She really is top notch. And on top of all this, her apartment is amazing! Go stay with her! You will not regret it!