We had a great stay here and were really sorry to leave. Gaelle was communicative and flexible from the start and her friend Milena gave us a warm welcome at the apartment and stayed in touch throughout our trip to make sure we were happy (we were) and had everything we needed (we did); she really went above and beyond and shared tips and recommendations with us. Great hosts who make you feel as if you are staying with friends who just unfortunately weren't around when you happened to come to town, but want to make sure you have the best time ever!
The apartment is probably best for a couple or friends who are comfortable bunking up - it's spacious and the living space is really large but there is a split bathroom, and the shower/sink half is not fully separate from the rest of the bedroom (a low divider wall and curtain divides the two). So, you just need to consider what level of privacy you require! This would also be a great place for someone on an extended trip in Paris because the kitchen is really nicely equipped and pretty roomy. Gaelle has also achieved that rare balance (in an airbnb) of leaving a lot of space for her guests' things while still maintaining the feeling of being "at home" through the decor and the presence of her lovely collections of books and art.
Although there is a nice little lift in the building, I don't think this is ideal for anyone with mobility issues as the neighborhood has many steep hills and steps. If that won't bother you, then stay here and enjoy the views! The area is very picturesque and full of great restaurants and little shops, very fun to walk around, and there is nearby public transport at the Abbesses station.