We had a good stay at Romain's. The flat is small but clean, nicely decorated and comfortable. It is not super central but in a nice area adjacent to the beautiful Buttes-Chaumont park. Communicating with Romain was easy and quick and he was flexible and proactive in adding an extra night and arranging late check-in for us.
One thing we had missed in the listing is that smoking is allowed and therefore we were suprised at the cigarette smell when we arrived. It got better after ventilating but still present, something to be aware for non-smokers.