Aline was very responsive and helpful on check-in and also flexible with our check out time which was great. Location was right near Place du Tertre which is very busy with tourists, but cool to walk around at night once everyone cleared out. It is worth noting that both the kitchen and bathroom are extremely small and not especially functional. For instance if you want to cook a meal in the kitchen or brush your teeth I don't think two people could stand comfortably side by side in either. Other than that - having a piano in montmartre was very special :)