SUPERB. We stayed in Caroline's studio for 6 nights, and everything was just perfect and satisfying. If you come to visit Paris alone or with one friend, this studio would be a top ideal choice.
The location is great, so that we often even did not need to take buses or subways to the places we would like to visit. Supermarkets and restaurants are all near the intention.
The studio is super clean, especially the washroom, which is always the most important to me when I evaluate hotels and apartments. Besides, we really had everything we might need in the flat, which shows that our host is indeed very thoughful.
On top of all, I particularly appreciate Caroline's prompt response everytime when we need any help, even if it was in the late evening, and even if it might be truly inconvenient for her. Both she and her husband are super kind and helpful, and what else could be more important than this for the ones traveling in foreign lands?
All in all, I highly recommend Caroline's place, and will definitely revisit at some point in the future.