Leo was very responsive to any questions we had throughout our stay!
We loved the location on Ile St Louis. It's a charming little island with great shops and restaurants. We were able to walk to food at 10:00 PM and have a great meal. We found a wonderful bakery, Le Boulanger de la Tour, just across the bridge, Pont de la Tournelle. The location of the apartment has easy access to the Metro, but to see Paris, we mostly walked and took a taxi back when tired.
Typical of Paris, the apartment is secured behind large wooden doors with a security code for entry and then through a courtyard to the stairs. The building is charming with a narrow spiraling staircase. It very much gives the feel of experiencing the lifestyles of Parisians. It is a quiet residence which overlooks the courtyard.
The apartment was exceptionally clean and smelled good. The best part was being able to open the large windows with the French window grills. The drapes can be drawn to block the morning sun. The bed and the sofa bed were both comfortable. The shower was hot and there were plenty of towels. (Americans traveling abroad for the first time should pack a few dollar store washcloths that can be left at each location. Top sheets are also not common in Europe, so you may want to pack one. There are many lessons to be learned about minimalistic living.) There was a great blow dryer and also adequate toiletries. Outlets were plentiful. We didn't use the TV, but there was one in the living room. There was space for hanging clothes in a storage area in the kitchen. There was also an iron and ironing board.
The kitchen was stocked, although we only used the Nespresso machine. Espresso cups and condiments were provided. The washer/dryer combo was an interesting experience. (Americans might prefer to drop off laundry for wash, dry, and fold. These combo machines take much longer than we are accustomed to and hold fewer items. And there are no English instructions, even online.)
I would definitely stay here again and have already recommended it to a friend.