This is truly the key to a great experience in Paris! I stayed in Gaia's apartment for three nights in June with two friends, it was plenty big and incredibly comfy. The view out the main window will melt your heart, along with the local surroundings. This quiet hidden corner of Paris has a small cafe outside (great coffee) metro station, supermarket and bike hire all on your doorstep.
Gaia ensured we had everything we needed for check in and check out. Whilst unavailable to meet us personally ensured our first arriving guest was personally greater and showed around the place.
I would recommended this apartment to any group of 1-4 staying in Paris.