Alex is a very nice host, that in a genuine way wants his guests to feel comfortable in his apartment.
He has been really flexible on changing different times the hour of our arrival, he waited for us downstairs and he was very helpful with carrying our bags and taking his time to explain the details and showing us a map of the area.
The description of the apartment is precise, what you can read about it you will find it, the pictures showed on the website are realistic and they show the apartment how it is: a typical parisian flat. No problems with heating and internet access. Some basic food and drink in the flat, and everything you need if you want to cook something.
It is really close to Montmartre (10min walking) and 40seconds walking to the metro stop La Fourche.
The neighbourhood seemed fine, with several supermarkets and bakeries.
Therefore we can recommend his flat, even if there was something that I didn't like (but that I didn't read in any other reviews, so maybe it has been something temporary): some boring vibrations, maybe due to the metro station.