This studio is in a great location for exploring Paris. It is just around the corner from the Etienne Marcel metro stop and just a couple minutes from Les Halles RER stop which gets you to CDG airport. Walking to the major sites, like Notre Dame or the Louvre is a breeze. We enjoyed walking down Rue Saint-Denis towards the Seine, and stopping for more nutella crepes than we probably should have!
The studio itself is beautiful. It is equipped with everything you need. The bed is very comfortable, and the bathroom has more space than we expected (excellent shower!). We did hear some street noise on a few evenings, but it wasn't too bad except for the night before May 1, which is a national holiday in France, so people were louder than usual out on the streets and coming in and out of the building. The walls are a bit thin, so you can hear people going up and down the stairs, and there was also some construction going on in the building, but this only bothered us a couple of times.
Danielle was very helpful and was available if we needed her, though we didn't run into any problems. She also includes tea, coffee, sugar and a few other items in the kitchen, which I thought was really nice.