I stayed here for a month and had a great time in a lovely studio. Nicely decorated, and the sofa bed is very comfortable (and much bigger than expected). The kitchen is fully equipped for cooking regularly.
One small thing to note is that there was not much storage space available, just one cupboard, which also stores the cleaning equipment. This was no problem for me, as I didn't have much stuff.
The area around the apartment isn't the richest part of Paris, but has lots of life, with great markets and bakeries almost on the doorstep. It's convenient for getting to Gare du Nord, and also has a metro station nearby. Montmartre and Sacré-Coeur are a short walk away if you fancy more touristy areas, while the city centre is an hour's walk or a simple trip on the metro away.
Thanks for having me Stéphanie, I had a great time!