We had a lovely time staying here! 5 stars for location!!! The island itself is super cute, and the apartment is a short (<5 min) walk to cafes, creperies, and the Notre Dame! Clémentine was very responsive by email and check in was smooth. The apartment was larger than I thought it would be and includes two pretty spacious rooms, a small "kitchen" area, and a bathroom with a sink and nice shower. The toilet being outside the apartment was kind of weird, and it was very small, but not a huge deal.
The only issue we had was the Internet not working when we first arrived. We had to go to a cafe and email Clémentine, but it did start working after we came back. The signal was only strong enough right next to the door so it seems like the router might be in another apartment.
Also, the lack of A/C makes it very hot in the summer. This might be a deal breaker for some people but I didn't mind!
Overall these were pretty minor issues and I would probably stay here again!