I stayed at Amritas apartment for two weeks. It is situated in a typical Parisian building in the 11th arrondissement.
The apartment has everything you need for both a short and long stay. Bedroom with large bed and storage, living room (with sofa bed), bathroom and a well equipped kitchen. High speed internet. Everything I needed was provided and more.
Regarding transport you are within 5-10 minutes of walking distance to metro lines 1, 6, 8, 9 and a RER at Nation. Very convenient location in a local Parisian neighborhood. Close by you have several types of supermarkets with flexible opening hours. You can also easily walk to Bastille in ~15 minutes.
Whenever I had a question, Amrita was accessible by phone or message and shared many recommendations for cafées and restaurants in the area. Was a perfect stay - I would definitely stay here again.