If you are looking for a space for 2 people, this is a great choice. It is very small, but was extremely clean and perfect for our 3 day stay in Paris. It is centrally located to the Sentier and Strasbourg Saint- Denis metro stops, which made it very easy to get around. We felt safe walking around at night, and easily walked to the Louvre. Plenty of grocery stores and places to eat nearby as well.
In regards to space, definitely be prepared to get cozy. The sink is a bit small and difficult to wash your face in, but the shower was really nice and had great water pressure and heat. The bed was super comfortable and it was never cold in the apartment. Only suggestion would be to perhaps include a towel to dry the dishes/hands in the kitchen and paper towels for cleaning/eating. Wifi worked with no problems- we did not use the TV but it was a nice touch! The kitchen was stocked with plenty of plates and cookware, just no mugs for coffee/tea or a sponge which we purchased and left behind a new one for the next guest :)
Overall, it was a perfect stay in Paris. Thank you Yankel for this charming apartment!