We have been amazed to stay in the flat. It was like entering a hidden world in the middle of Paris. It is very near the Notre Dame cathedral and central. Only thing you need to know is that if you use the sleeping couch it is very bright in the night due to a street light right in front of the flat.
The flat itself is a wonder. Small but everything in place and brand new renovated. Heating system work great (bathroom and living room) and the whole flat was very clean.
Communication was superb. Very fast replies, helpful and guest friendly. Nothing more to say! Will come again!