Emma gets 5 stars - she was easy to work with, responded quickly and was well prepared with customized maps of her neighborhood that included points of interests, favorite restaurants, transportation options, and pictures to make it easier to find things. She made the process extremely easy. Our train didn't leave until early evening, and she generously offered for us to leave our luggage for the day and pick up later if we wanted.
The property is not a resort rental, it is a cozy and well loved family home, so set your expectations accordingly. We had a large group (4 adults, 4 children & a baby), which was hard to find accommodations for in Paris, but was important for us to stay together. Emma's place was perfect for our group and she was even able to provide a pack-n-play for the baby. There was space and toys for the kids to play, which the kids loved (and the parents appreciated) after long days walking around the city. The kitchen was spacious and easily accommodated our large party.
The location was good. The courtyard was very quiet (even with windows open at night), so there was very little city noise - if anything we felt loud with a crying baby and young children. The neighborhood is lively with lots of wonderful options for food, dining, shopping and necessities just steps from the apartment. We ended up using Uber to get to and from the apartment. It would be a lovely walk (or metro) to many of Paris' top destinations, but was not always an option for us with many small children.