Superb experience! The location is really good - in a quieter neighbourhood less than a two minute walk to a metro line that will take you anywhere you could want to go. Or, if you prefer to walk, it's only a 20 or so minute stroll into the heart of the city (a very picturesque walk along the walls of the Vatican and past St Peter's square). There are a couple of decent sized supermarkets close by, too.
The apartment itself is lovely. Clean and spacious, it's a great base to come back to after a busy day exploring the city. All this is complemented by Andrea's wonderful hosting. All communication was swift, and we were met at the apartment by Andrea, who was warm, welcoming, and full of helpful information.
Highly recommend staying with Andrea!