This is a very nice apartment a few hundred metres' walk from Gare du Nord (which may or may not be a good location depending on what you're after). It's tastefully decorated, with clean, comfortable beds and good privacy. About the only missing facilities I can think of were a microwave and perhaps a TV, if you care about that. The apartment is 3 flights of high-ceilinged stairs above street level up a narrow spiral staircase with no elevator as a warning to those with a lot of heavy or bulky luggage. In terms of cleanliness it was "acceptable" rather than "professionally spotless" in the bathroom and kitchen but otherwise very good. The host was friendly, communicative and accommodating, and nicely allowed us to stay in the apartment until we had to leave for our flight at 3pm. Highly recommended :)