The location is superb! Just at the foot of the stairs to the top of Montmartre. The metro station Abesses is literally around the corner. The Montmartre's main street and supermarkets are within 5min walk.
The flat is tiny-should comfortably fit 2 people ( there were 4 of us)-but well equipped.
Be prepared that the floor in the main room is covered with a sort of straw carpet.
Quentin is a very nice host: there were fresh eggs, butter,milk in the fridge -very thoughtful touch for the travellers who had just desembarked from the long flight.
There was a complimentary bottle of wine, too.
Quentin kindly allowed us to check out later on the day and provided us with taxi's website.