Nice apartment in an excellent location in Paris. Main issue for us is that communication wasn't the best: as soon as I reserved I asked in no uncertain terms if early check in was possible and the friendly ambiguous response could be interpreted that it was possible. Yes, I shouldn't have assumed but then please don't dodge the question and answer clearly. I would have booked from one day earlier or looked elsewhere. Only after the free cancellation period expired I was told that check-in was at 4pm. Then, several promises to see if any earlier check-in was possible were not met. So there was a huge hassle where we had to check in at an airport hotel first (we landed very early with a young child). Once at the apartment, the key wasn't at the box at 4 pm (cleaner wasn't done) and the apartment number wasn't obvious (2nd floor in Europe is two floors above ground level not one as in other countries, so I was knocking at the wrong door). No elevator by the way :-). But we saw the cleaner coming down at 4:15 pm and were able to access, crisis averted :-).
Now, on the stay itself it was good, the apartment was clean, well appointed and with good heating, beds were comfortable with good quality firm mattresses. My one observation is that the living room sofas are inflatable (one of which was flat) and are not really comfortable for seating for long.
All in, I can recommend this flat and would stay there again.