Sarah was a really nice host. We had the opportunity to go to the flat 2 hours earlyer and she organized a shuttle service for us before.
The flat itself is equipped with everything you need and located perfectly between Vatican and Castel Sant'Angelo.
Next to the appartment are different restaurants and small shops, which are opened quite long. If you'd like to sleep early you should keep that in mind, that you can hear the street noise.
We had a wonderful time in Rome - thanks a lot :)