Thomas' studio apartment is nice, clean, located in a great central neighborhood for your Paris stay. It's just around the corner from the Sentier Metro station which makes getting around the rest of Paris pretty easy.
We spent our mostly just our nights there, which this spot is perfect for. The bed sheets, towels, bathroom and living area was all clean.
The experience for us was really what we were looking for. Being from the Midwest of the United States, we really have never experienced big city apartment living. We felt like Parisians - but it's not in some sketchy area. The apartment is sandwiched by two streets that always have people on them, making it not nerve wracking once you realize the location. At peak hours, you can sometimes hear neighbors through the wall - but it is not at all worrisome or threatening. They are all very cordial if you see them.
The stay really does make you feel like you are a local.