We had a wonderful stay at Sandrine's! First the great stuff: Even though she was sick she went out of her way to offer us tips and advice via phone/text/email. The apartment is loaded with maps and guides to help you figure out what to do in Paris. The location is perfect for sight seeing, a 2 minute walk from the T stop, and a 2 minute walk to a fully stocked grocery store. 10 minute walk to the botanical gardens and natural history museum. Lots of restaurants and stores around including a small department store in the same building.
There were only two minor imperfections in the stay. 1) the street is currently under construction, so there is a lot of dust around - not the hosts fault, there really isn't much to be done about it at the moment, but I'm sure that issue will resolve itself then the street work is done. Just keep it in mind if you have allergies. 2)it is a first floor apartment in a neighborhood with a lot of bars and restaurants, so there is a lot of foot traffic and people talking outside the window until around midnight. That's not a problem, though, if you're going to be out in the evening!