The space is lovely, modern, and clean, with everything we need provided. The street is a lovely residential street, all charm, and is convenient to wonderful restaurants which Raphael gave us tips on. The sights of Montmartre hill and the metro are very convenient, as is the subway.
The downside for us was the noise on the street, which was bad on Thursday and really bad on Friday. The flat is immediately on the street, so one is fully exposed to the noise. Even though it wasn't too hot while we were there, it felt like it would be pretty stifling to shut the windows, although finally I did shut them in the middle of the night when the temps had dropped some. Also the main bed was harder than we would like, although typical for Europe.