I stayed one month at this apartment.Not in the main touristic area, but well located (3 metro lines + many buses). Supermarket open late (22:00), laundromat, and many restaurants nearby. There is also a market several mornings of the week.
The apartment is renewed, well furnished, it is a studio perfect for one to two persons. The owner made sure I would not lack anything (even a nice selection of movies was provided!). AMAZING VIEW on Paris: you can have your meals on the balcony, with a view on Tour Eiffel, Montmartre, Notre-Dame and other main spots at the same time!
I had a very pleasant stay and felt at home. I would recommend this apartment.