I'm an American academic and this was a perfect studio for a stay of several days in Paris. It's in a great location, right next to the very lively Place de la Contrescarpe and the Rue Moufftard. Tons of bars, restaurants, cafés, and shops. The studio is on the ground floor, right off the street. It's tiny, but comfortable, spotless, and has everything you need. Excellent shower with lots of hot water. I would absolutely have been happy to stay in the apartment for several weeks if I were there for a longer stay. It would work for two people, but only if you're very close! There's a friendly homeless guy who hangs out near the studio, but don't let that put you off.
The only possible problem is that it is likely be very hot and stuffy in hot weather. It was cool while I was there in July, so I was lucky. There is no window in the back of the studio that you would need to get some cross ventilation.
Céline was a perfect host. She lives right next door and got me right into the studio when I arrived late at night. She was very friendly and helpful.
I highly recommend this studio!