Christians apartment is really nicely located in a clean and quiet apartment building right on top of Montmartre. A perfect launching pad for a lovely stay in Paris.
While not big (what to expect at such a location), it is efficiently organised and fits 4 people. As a family with two children under 7 we were comfortable. Practical kitchen and a clean shower.
Christian is a great host and everything was as advertised.
Despite the location, with windows closed there is little to no noise. Only drawback, as it was mid summer, it was getting a bit too hot to keep the windows closed at night.