The location was perfect for us...at the foot of the funicular going up to Sacre Coeur. The only problem we incurred was lack of communication between us and Marc with regards to the need for the concierge to be there when our travelling companions were arriving. There was great difficulty in arranging to get the key to them as we had to leave a day early because of an airline strike.
Also, I would recommend that the folding metal dining chairs be changed to a nicer small chair that could function as additional seating and be more inviting.
Other than that the apartment was just what we expected.