If you plan to spend most of your time seeing the city, this small apartment has everything you need for a relaxing home base. The living space is tiny (more than 2 people would be tight), but it's all you need to put your feet up after a long day. And the bed is incredibly comfortable to get rested up for your next day of exploring Paris.
I can't say enough about the location, though. The area is completely safe, there are cafes and boulangeries within easy walking distance, and the metro is just around the corner to give you access to the rest of the city and its sights. Our breakfast of fresh fruit and croissants every morning came from the local streets.
We had a little trouble with payment but that had more to do with our banks not talking to each other than the owners. Our contact Abigaëlle was responsive and helped us work through the issues. The only difficulty we encountered was a mix-up with the on-site host that resulted in a worrisome delay at check-in. Not a big deal compared to the overall experience.
I recommend "our Paris apartment" for absolutely anyone looking for a centrally-located home in the heart of Paris!