We've visited Paris a number of times, staying in conventional hotels in the 5th. For this trip, we were looking for something different and, frankly, something providing better value. We spent a delightful week at Ludmila & Olivier's flat. We liked the (relatively) "residential" atmosphere of the neighborhood and the easy access to the Metro. In addition, it was easy to walk to the center of town -- as it was pretty much downhill from Montmartre.
Check-in was easy and Ludmila accommodated our request for early arrival. She was available at a moment's notice if we needed anything. The flat is clean and quiet. Sleeping was no problem. The shower stall is typical for Europe but the water pressure was excellent. There was abundant hot water. There is cable TV with a wealth of stations, including a few in English. (Start at channel 341.)
The kitchen is equipped for those with an interest in cooking. We did little more than make café au lait in the morning, which was quick and easy with a great hot pot and microwave oven (for the milk). The kitchen has a pot for making "Turkish" style coffee but we used our portable AeroPress instead. This worked well.
We're glad we chose these accommodations.