In general we enjoyed our stay and did not have any serious problems. The appartment was good value considering it's location near the centre of Paris.
However, we have to say that we were a bit disappointed with some aspects:
Check-in: We were told initially that someone would meet us, then at the last moment we were told we had to collect the key from a local food shop.
The appartment needs lots of small things fixing which would not cost a lot of money.....shower head, elctrical sockets, lights etc.
There was very little space to store our things as the appartment is full of the owner's personal possesions.
It could be a much more pleasant place to stay with just a bit of work!
I would recommend it however