Maria Carla made us feel very welcome and very helpful indeed.
I can only recommend her charming apartment. The only thing we underestimated is the liveliness of Trastevere. If one needs a very good night sleep, the room towards the street will be challenging, but manageable with earplugs.
On the other hand this apartment oozes charm. So if you want to live in an amazingly romantic Roman location in a historical very well kept place, there will not be much on offer that beats this flat.