Beautiful space in what for me is the ideal location in France. The Ile Saint Louis is itself charming, but is especially lovely as a place to stay because it's so quiet at night and, surrounded by the Seine, feels like a haven from the city. The apartment is maybe three minutes' walk from Notre Dame, and maybe five from the Marais and the Latin Quarter. It's located on the main shopping street on the island. No views of the Seine (it faces the shopping street and is on the first floor, but you can't have everything). During the day, the street is bustling, but the apartment is well sound-proofed and not at all noisy. With the windows open, we enjoyed the street sounds below. At night, it's exceptionally quiet. The only obtrusive noise was of the front entrance door to the building, which slams, but none of us found that particularly annoying though we definitely felt/heard it.
The apartment itself is beautiful, with a ton of natural light, great lighting throughout, and wonderful amenities--Nespresso machine, dish washer, washer and dryer, large refrigerator, etc.
The king bedroom (facing the street) has a shower, double sink, and toilet. A lot of closet and drawer space in the king bedroom, too.
The queen bedroom (facing the courtyard) has a shower/bath combination and a sink. The second toilet is separate from the queen bathroom, located near the entrance. Not so much storage space in the queen bedroom.
On a warm night, the king bedroom will likely be a little warmer than the queen. I think the queen will also be a little quieter, but my wife and I were in the king and found it plenty quiet even though it faces the street.
Best place for a cappuccino I found all over Paris (and I searched diligently) is a four-minute walk--Cafeoteque in the Marais. The bakery downstairs and just to the left has the best croissants I found (and again, it was my great pleasure to search far and wide). Also delicious baguettes. A great crepe place downstairs and just to the left.
Host Francois was a pleasure to interact with.
All and all, a great value and a great place to spend a week with friends. We all agreed we would come back (and we hope to!) in a heartbeat. Merci Francoise.