Emeline's apartment is a great place to stay in Paris. We were there in August and the apartment was very quiet. The apartment is clean and roomy. There are three separate bedrooms, two with single beds and a third with a double/queen bed. There is also a sofa bed and a single sofa for sleeping in the living room. We were a group of 4 and found the we had a lot of space. It was so much better than staying in a hotel!
The kitchen and living room are ample and have a lot of natural light and look over a pretty courtyard. The shower room is separate from the WC, a plus for a group of 4 or 5 people. The building is secure and there are 7 or 8 restaurants within two blocks, most are open to 11 pm. A small convenience store is around the corner and the larger grocery stores are just a 10 min walk. We shopped a lot in the area to the west of the apartment and also shopped the open air Marche Bastille. There are three metro stations that are close by. The furthest was a 10 min walk to the St Paul area. The surrounding blocks are clean and beautiful and safe to walk. The Place des Vosges is a beautiful park that closes at 11 pm each night. Victor Hugo's apartment is located there. We were able to get taxis easily on the Rue des Francs Bourgeois, the Place and the larger streets. Taxis are only required to take 3 people but we were often willing to take 4 people. We used taxis to get to Gare Montparnasse for Versailles since Gare d'Austerlitz train station to Versailles was under repair. Taxi was the best way to get to and from the Eiffel tower area.
Most taxis don't know the street address but you can ask to go to the Place de la Bastille or Place des Vosges to get home. We used a taxi from CDG but used the metro to get to CDG on departure since it is difficult to get a taxi for 4 with luggage in Paris.
I think you would really enjoy your stay at Emeline's apartment, we certainly did.