We had a wonderful stay here. The location was amazing - in a vibrant neighborhood across from Parc Monceau, away from the more touristy parts but easy to get to them. The restaurants below the building and within a couple blocks were accessible and enjoyable, and clearly patronized by the after-work locals.
The apartment was perfect for three women. The kitchen and bathroom were tiny by American standards but had everything we needed, including a washer/drier, and felt authentic. The floors and stairs were indeed creaky, adding to the charm. You will hear ambient city and neighbor noise, and be sure to close the outer metal shutters if you want the bedrooms to be darker. The beds were basic but comfortable, with cotton bedding. We used Odile's book of recommendations for a few things. We'd come back!