The check-in and communication with Dominique was wonderful and very nice at all times!
Regarding the apartment you should be prepared that the air conditioning is not working or not working well and that there are only two air conditioners - one in the smaller bedroom (facing the window) and one in the other bedroom. No air conditioning in the bigger rooms or the kitchen, which makes it almost impossible to sleep or do anything inside the apartment during summer heat.
Fans were provided, but they did not really solve the problem for us unfortunately.
Other than that the apartment is located very central, which is good, if you want to go out in Trastevere. Though you should be prepared to loud music directly in front of your window every evening as it goes out directly to Piazza Trilussa.
The design of the apartment in general is nice and it has an artsy touch. Some parts of it were not cleaned well and very dusty and some rooms seem a lot older than on the pictures.
All in all we were very content with the communication and everything around the apartment, but unfortunately rather disappointed with the apartment in comparison to what we saw on the pictures and what we expected. Maybe a better place to stay at during the winter.