We had a lovely time, the host is very responsive and flexible. The flat is spacious enough for 2 people, and a fully functional kitchen is useful if you need anything. The apartment building is very authentic (expect stairs) and unfussy, and the location close to Montmartre puts you in quite a central location close to several Metro stations. The area directly around the flat is quite touristy and we wouldn't recommend dining in the area, but there are also supermarkets and other shops around that make a longer stay worthwhile. Finally, there was little to no noise even with the World Cup final happening, so you can expect a good night's rest!