We felt very at home in the flat and found it a brilliant base from which to explore Paris, both the centre and further north / east. It's in a great area, central but mixed and not too touristy and within easy walking distance of lots of bars and restaurants. It's 2 mins from the nearest Metro.
Marions flat is very homely, with warmth and rustic charm, interesting books and trinkets. Everything we needed was there and we slept very comfortably.
We arrived very late, but Marion met us at the flat and welcomed us generously, leaving us maps, tips and recomendations. We would definitely come back!