My friend and I really enjoyed our stay at Charles's apartment. Its location is ideal. It feels really authentic and Parisian. Rue des Martyrs has amazing restaurants, cafés, patisseries, fromageries and some lovely boutiques. It's really conveniently located, being very close to the Metro and only 15 mins walk from la gare du nord. It's also not far from Pigalle and Sacré Coeur. The apartment itself is lovely, beautifully furnished and has everything you need and more. Charles is very friendly and helpful and I'll definitely recommend his apartment to friends.