A clean and well-equipped flat. It is three flights up a fairly twisty, narrow staircase, but we had no trouble getting up and down, even with luggage, taking a bit of care (we are in our mid-seventies). We had been traveling for about ten days, and we particularly appreciated the very nice in-apartment clothes-washer, drying rack, iron, and ironing board. The bathroom is clean and bright, with a new shower and a well-functioning heater/towel-warmer/dryer. There is an openable roof-window, and another good wall-window for cross-ventilation. We were there at the end of April, and the temperatures were comfortable. There is what looks like a good electric fan for warmer weather, but we didn't need it. The refrigerator is quite new and very clean, and it worked well. We had a little bit of trouble checking in, because our host, Eric, was away at work and we hadn't understood how to obtain the keys. But once we called him and found out where they were, we were able to enter and begin a very enjoyable stay.
It is in a lively, busy, working-class part of town. It is conveniently located, close to the Goncourt metro station, with easy and affordable shopping at a nearby "Monoprix" grocery store. An excellent bakery "Boulangerie Urban" is just steps away, with the best baguettes we found in Paris. A 10-minute walk can get one to the lovely Canal Saint Martin, with a 19th Century system of locks and bridges offering cruise-boat tours (part underground!), connecting all the way to the Seine and the Eiffel Tower.
Eric is a thoughtful host and offers helpful suggestions for good places to eat and drink, or just to stroll and enjoy. He also helped us find a convenient chain of "City Locker" luggage-storage locations, where one can leave one's luggage before check-in or after check-out time. We found his apartment quite affordable for Paris, and we enjoyed our 4-day stay there very much.