Marzia is an incredible host, really friendly and attentive. I have never met anyone like her after six years of using this platform in three different countries.
The apartment is very well located, just a 10 minute walk from St. Peter's Square, and 30 min. from Piazza Navona. There is a great restaurant next door (Goose), and you can find a Carrefour and all kinds of services in the neighborhood. Since the apartment has a full kitchen, it's a particularly attractive option if you are planning to stay in Rome more than a week. It's not noisy, the ventilation is good, and it does not get too hot or too cold.