Hugues was very helpful, although we weren't able to meet him during our stay, the concierge for the building met us to hand over the keys at the start of our visit.
The flat was small & perfectly formed, right next to a metro station as well as shops and restaurants, and the beautiful Parc des Buttes Chaumont. The neighbourhood is good both during the day and after dark, and it was a wonderful place to use as a base to explore the city.
We would definitely recommend this flat for one or two people, and would happily visit again in the future.