Amazing location, you can walk to all the main attractions in central Paris. Nicolas was a great host - gave us some good restaurant recommendations and was very flexible with check in / out times.
The apartment is hidden behind a popular road, so it felt like an oasis in a busy place. The flat itself was bright and airy, quiet and very comfortable. The only downside was the bathroom, which is quite small BUT functional (with good water pressure).
I definitely would stay here again :)