Positives:
location is fantastic for this accommodation, just a 5 minute walk from Pigalle & Abbesses (although Abbesses is up hill the entire way), we used Pigalle always. Accommodation has everything you need (except kitchen linens were missing the first week). We were given a free mid-stay cleaning, so towels and bedding were freshened up, and all was cleaned for us for our second week. That was very much appreciated.
Negatives: in order to use the kitchen efficiently we found no plug for the sink to do dishes (but there is a small dishwasher which we ended up using), kitchen linens were missing the first week of our stay. The garbage/recycling disposal is right outside the door of the accommodation in the courtyard, so this got to be a little annoying after awhile - bottles clanging into recycling bins in the middle of the night or early in the morning. Otherwise the building was fairly quiet. The dryer in the washer/dryer combo does not dry, it just tumbles the clothing, so plan to hang your clothing on the heated towel rack. Bathroom is very small, and with european showers, there's no door, so everything gets quite wet. There is a lot of mold in the shower, not sure when the last time it was bleached properly, but it seemed to grow while we were there. If you are allergic to mold, I would not stay here.