My friend and I stayed in Alexandre's place for Christmas holidays and it was amazing! We felt very welcome, he made us breakfast every morning and explained everything we asked about where to go in Paris and in which restaurants with cheap but good food :)
Apartment location is also great, just 2-3 minutes from Metro station (which is in the bigger "busy" street so there are also a lot of groceries and nice bars and small restaurants, everything you need is just couple of minutes away).
Alexandre is very kind and very interesting person who traveled a lot and brought the piece of each place he has been to his apartment. And the toilet decorations are crazy!
If you are looking for pleasant stay in Paris in an interesting apartment with and even more interesting owner - Alexandre's place is for you!