Location location location!!! This is the perfect place to explore the city. The Maris is moments away Notre Dame is a 5 minute walk. The Island itself is great to explore with great restaurants food shops and general shopping. Under your window the boats go up the Seine and in the evening you can watch the Eiffel Tower light up
The apartment is tiny but has everything you need and feels bigger as a result of good design. Boris was very easy to deal with and his helper Tim was helpful. The only thing to know is that it is noisy as you are on the main road on and off the Island but that's just life in the city.