Carmen's place is wonderful!
It's in a very central location, 1 minute from Piazza Navona. The street is full of restaurants and there's a 24/7 grocery store as well.
The apartment is very clean and has all the amenities you need. The beds are very comfortable and the fact that there's two bathrooms is a huge plus - you never have to wait your turn :)
Carmen's friend, Elmer welcomed us, he was very nice, the check-in was really flexible and quick even though he showed everything and answered all our questions.
The communication was amazing too, Carmen checked in if we need anything every day and answered within a minute when I had a question.
I'd definitely stay here again if I come back to Rome!