Great apartment, very conveniently located, close to everything you need and very close to public transportation. Valerie and Theo are also great hosts - super responsive and extremely welcoming.
For those who might be worried that there's no AC: We stayed there during the heat wave in early August (33C-36C during the day) and still had no trouble sleeping at night. The apartment cools very fast after the sun sets and is easy to keep cool during the day by closing the blinds and windows. The street is also very calm at night so it's no trouble sleeping with the windows open.
Overall a great place, we'll book it again without hesitation next time we're in Paris!