This place looks just like it does in the pictures. It is thoughtfully designed with really nice touches. Someone has clearly lived here, and they have great taste.
The neighborhood (11e) is known for its charm and nightlife. There are lots of bars, restaurants, cafe's, etc. and it is very close to République. Honestly, it is really close to almost anything you might want to do. I highly recommend taking the Metro if you can stand it, because I was able to visit a ton of attractions cheaper and faster than I otherwise would by taxi.
Pro tip: I also took the metro to the airport, it is about as fast as taking a taxi, costs only €10, and only requires one transfer.
The neighbors smoke so I caution against leaving the windows open during the day if the smell bothers you. Of course the smoke is not a fault of the host but helps to know if you don't like coming home to the smell.
I had to wait 45 minutes in front of the building with my bags in tow for the person who was supposed check me in. That person never showed up. I did eventually get text message with self check-in instructions which worked fine. The communication during my check-in was slow, and ultimately caused me to miss part of a concert I planned to attend that evening.
The impression I got is that some things had come up as I was checking in and is not likely to happen to anyone else but is worth mentioning. After my check-in the host was very good about communication and went out of their way to make me feel welcome. I would recommend this place to anyone who wants an authentic Paris experience.