This is a great place to stay for a few days, especially for the price. The bedroom/living space is quite large and private - the bed is bigger than any I have encountered during my travels! The kitchen is very small, so if you are planning to cook, perhaps elaborate meals will be difficult.
Jérémy was an absolutely attentive and responsive host. The morning we needed to check out, we had several hours before we could check in to our next place, and he allowed us to store our bags at the apartment, which made a world of difference to us.
All in all, I recommend this apartment to anyone traveling to Paris who doesn't mind sharing a bathroom and kitchen. You can't beat the location or the price.