We had a nice stay in the flat.
Loads of positives:
It was a great location for us, just a few minutes from the tube stop - so convenient! And close enough to walk to the Cimetière du pere lachaise too which was lovely. The nearest bakery had amazing patisseries and there is mini supermarket just opposite the flat - it's perfect.
The keyless access with the code on the door is very convenient (although the door can be a bit "sticky" but you simply have to keep at it)
The flat is very nicely decorated, the beds are really confortable and even the sofa beds mattresses are very comfy. The bathroom towels are very nice too and the showers in both bathrooms are really really good (powerful). The are hairdryers there too which is really helpful.
The flat was very clean too which we really appreciated.
negatives:
A few things need repairing in the flat but I have mentioned those to the owner (the table football downstairs, one of the blinds, a frame)
There were no tea towels in the kitchen
The heating is not straight forward to work out, although there were some stand alone extra heaters here and there so we were able to use those.