We had a great time at Charles' apartment and can recommend! The location is really great, right in the middle of a famous street for restaurants and shops.
The apartment is on the 3rd floor with an elevator that fits two people or two large luggages. Since we were travelling in a group of 3 people and a toddler (+ baby stroller) we had to go up and down several times to get everything situated in the aparment at our arrival. The small elevators are standard for Paris though!
We didn't use the kitchen in the apartment but there is everything available one might need.
The living room with two sofa beds is spacious with tasteful interior. There are black out curtains in the living room so really convenient when used as sleeping space as well.
Mattress in bed room is comfortable, enough pillows and duvets are available.
There is a baby cot available which the cleaning lady had set-up for us.
The communication with Charles was flawless, although he's been in a different time zone when we travelled he was available throughout our trip which made us feel attended to whenever we had questions.
Overall a really pleasant stay!