Domenico is a very friendly host and quite helpful.
The location is excellent, and undoubtedly the best thing about the apartment.
Domenico has been very creative in making what is quite a dark and enclosed apartment into a unique and individual place.
However, be aware that there is no mobile reception in the apartment, and unfortunately when we visited the Wi-Fi didn't work, so it was impossible to do any planning of our trip, buying tickets etc, while my children were asleep, which I had hoped to do.
Also there is little natural light in the apartment, and no view except of a small enclosed courtyard, so you need to have the lights on when you are there.
The cooking facilities are minimal, but then again, trastevere has a superb selection of dining out options!
So a good place to crash in an excellent location, but a bit claustrophobic to spend any chill out time.