We had a major problem which was resolved by compensation. A bit noisy some nights, but that is Montmarte. It is a great apartment in a great area, but an area where walking on cobblestones is necessary. I only mention this if you have difficulty walking - and also very difficult to wheel a suitcase. I would go back again (if she would have me!) Learn the Montmartre bus system and a Navigo card is a very, very good idea. Two keys, an extra towel each and a couple of cotton blankets in Spring and Autumn would be a good idea. Highly recommended.