We really liked Alain's apartment. We enjoyed coming back to it every evening as our domestic hub in Paris.
The view is lovely, you can see the Eifel tower, and also the top of the Notre-Dame cathedral, and of course the boat basin.
We loved the location, it's a great neighborhood, not uber-touristic, with a lively local vibe, restaurants, bars shops, markets etc, walking distance to the Marais and the Latin quarter.
The apartment is well equipped: Cookware, iron-board, washing machine, hair dryer, even a safe, and the bed is comfortable. The entrance is secured behind 2 code-locked doors, and there's an elevator which is a big plus in Paris.
Downside notes:
We knew the apartment was on a busy street. However, there's a lot of noise even when the windows are closed. If you are a light sleeper, you'll need earplugs.
Also, there were some missing basic supplies: sugar, coffee, tea, cooking oil, soap, sufficient toilette paper.