Thank you Sami for your feedback. 30-40mins from Gare du Nord station ? Around the flat there are 4 very close metro station, the closest metro stations near the appartment are with respective walk time to the apartment as follow : Saint-Ambroise and Voltaire on Line 9 are 300yards away 4-5mins walk one to go East, the other West; after is Richard Lenoir station on Line 5 is 5-10mins walk and 400yards away it is a nice maze of little street to get there but this station is direct to Gare du Nord. And lastly you have Saint-Maur on line 3, 5-10mins walk through the Square Gardette nearby. Hope it will help you and others. Further station is Bastille which 15mins walk, which will take to Le Marais, Notre-Dame, Le Louvres, Concorde, Champs-Elysées, L'Etoile in no time.