Giovanni's apartment is in an ancient building but with all the modern conveniences. It is large and spacious and there was nothing that we wanted for. Most of all we enjoyed being able to experience the 500 year old apartment.
At a practical level the two bathrooms, ability to shut rooms off from each other, ability to shut out light to sleep and quiet during the night made for a very restful stay.
The apartment is in the middle of the old city so it is very easy to get around to attractions and things like the night street food markets with out being close enough to get the noise.
We very much recommend Giovanni's place.