We stayed in Cyrille's place in April for 3 nights.
The appart is very well located, walking distance from Gare de Montparnasse and the bus coming from aiport, metro lines covering all Paris.
It is very spacious with an amazing view across Paris (12th floor), big terasse to enjoy an apero in the evenings and the sunrise if you wake up! Building is quiet, with elevator and easy to access.
Cyrille is very welcoming, smooth communication during the stay!
We spent a very nice short holiday!