I really enjoyed my stay with Kalyn and Joel! They are really nice, so welcoming and friendly... I felt at home and enjoyed very much their company, and at the same time they give lots of freedom. Very important: Kalyn cooks really well! If you have the chance to taste her vegan receipts, don't miss it! And Copper is a cool guy... Also, the apartment is indeed in a very good location near Gare du nord, which is very helpful when travelling and carrying along backpacks and suitcases..