Daniel was an amazing host: good communication and the place was great. He also told me about local places to visit and eat. The location of the studio is perfect, just steps away from Oberkampf metro in a very safe neighborhood. The studio has everything you need to be confortable and enjoy your visit to Paris.
Note: if you are planning to stay here (smart choice) be aware that the studio is on the 5th floor and there is no elevator. *Daniel was kind and helped me with my luggage, though.