The apartment location is very hard to beat. It is also very quiet as it faces an inner courtyard. It is also clearly not an apartment that is lived in by someone as a primary residence, which means it comes with many nice things: spices, coffee maker, a tiny and super handy dishwasher, washing machine... The space is tastefully decorated, and well laid out. Internet was speedy.
Onto things that folks should be aware of. The inner courtyard is not a pleasure to the eye. Don't expect fantastic views of paris. Lastly, there is a faint cigarette smell in the apartment. If that is not your thing, you might want to look elsewhere.
Overall we had a great stay! If you are looking for a central base in Paris at a reasonable price, this will be hard to beat.