First off, the location is a convenient 10-15 minute walk from the train station (Paris Est) and was very pleasant coming from Germany. Second, the location is quite useful if your main means of traveling is by speed train and/ or bus to get to the big tourist areas such as the Louvre Museum, Palace of Versailles, Eiffel Tower and more. I wouldn't say the area is "questionable" as a previous review stated, the area is actually quite peaceful and has various cafes but you should always remain aware of bicyclists and cars, as you should in Paris.
In regards to the room, I gave four stars because I assumed the room pictured in the listing was the room I was paying for. However, the room and bathroom was much smaller which was quite disappointing but it didn't bother my husband and I because we spent a great amount of the time exploring the city. There is also an AC which was nice to come back to! Staff and housekeeping was very friendly. You'll always have grocery shops, plenty of great places to eat and means of travel around you so it's a great spot. :)