The apartment is well located with the metro station of Nation nearby, 5-10 min walking.
We used it for a weekend and it was perfect. The shower was bigger than we imagined and the bedroom is big enough. The kitchen has the basics and was good to have breakfast.
Overall, for someone visiting the city who is going to be visiting during the day and doesn't require cooking, it's a good option. It is a bit pricey for 2 but after all, so is everything in Paris!