This review is for the apartment "Cosy 4", on the fourth floor of 6 rue Descartes. The photos for the listing are exactly what we found when we arrived. It is a very nicely equipped, attractive, clean and charming place to serve as base for a couple weeks or more exploring Paris. We were a family of four including an adult child and a teenager. Five people would be comfortable as well, perhaps six. The front windows offer a great view of Notre Dame Cathedral less than a km away, and of an interesting neighborhood nearer by. The Pantheon is literally just around the corner. There are grocery stores, green grocers, and wonderful bakeries within short walking distance. As we found, one of the cooking classes my wife and daughter took was 3 minutes walk away. Cardinal Lemoine Metro station is 8 and two very useful bus stops maybe 5 minutes down the hill. Four stories below our front windows is a very popular restaurant with good and varied live music on 4-5 evenings a week during peak tourist season. (There are 5-6 restaurants within 10 m of the front door worth trying.) Festivities didn't wind down on the square below till 4 or 5 am - again, we were there in mid-August. Neither of these things was a problem: it was enjoyable till we were ready to go to bed, and then earplugs were sufficient to block all noise out. The building is secure, the neighborhood seemed safe. There is a laundry room with free washer and dryer shared by the 10 or so small apartments in the building. Wifi was always adequate. The kitchen has a small stovetop, microwave, refrigerator and dishwasher, but no oven - sufficient for our needs. All necessary utensils are included. We didn't get to meet Jean-Noel, the host, but he certainly has things well organized. We were emailed thorough multi-page instructions for the apartment, and a copy is posted at the entry, that covered nearly every eventuality. The only way up to the apartment is a narrow and steeply winding staircase. At the end of a long day walking or bicycling around Paris, it was sometimes dreaded, but once you get up to the apartment, it's all good. With the temperatures what they were in mid-August, having the windows open at night was a necessity. There is very good flow-through ventilation with the front windows and rear window in the second bedroom open. However, we hadn't realized that Paris has mosquitos, and they love tourists. When we come back, and we are already talking about doing that in a few years, we would definitely try to stay in the same apartment, if it were available.